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# Renke: Renke is an environment monitoring sensors manufacturer

## Sitemaps
[XML Sitemap](https://www.renkeer.com/sitemap_index.xml): Includes all crawlable and indexable pages.

## Products
- [Online temperature and humidity transmitter](https://www.renkeer.com/product/online-temperature-and-humidity-transmitter/): Our online temperature and humidity transmitter has been calibrated by the Provincial Metrology Institute and has passed national explosion-proof quality inspections. Its explosion-proof markings are: Ex db IIC T6 Gb; Ex tb IIIC T80℃Db. It enables users to remotely monitor temperature and humidity changes over the long term and can be connected to a relay to control fans, alarms, or solenoid valves. Model: RS-FPC-WS-*-A-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $84
- [LoRa Temperature Humidity Data Logger](https://www.renkeer.com/product/lora-temperature-humidity-data-logger/): This LoRa temperature humidity data logger uses our proprietary wireless spread spectrum technology, boasting strong penetration and a communication distance of up to 3000m from line of sight. Wireless transmission eliminates the need for wiring, allowing the logger to be wall-mounted or directly attached to a wall (or the exterior of a refrigerator). Model: RS-WS-LORAH-*-6C-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $110~$118
- [Integrated pH Electrodes](https://www.renkeer.com/product/integrated-ph-electrodes/): Our integrated pH electrode is combination probe that integrate a composite electrode, a reference electrode, and a temperature sensor, providing accurate, temperature-compensated pH readings. Currently, we offer four types of pH electrodes to suit various applications: combination pH electrodes, desulfurization pH electrodes, electroplating pH electrodes, and antimony pH electrodes. Model: RS-PH-N01-3-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $50.3~$63
- [Optical Water Leak Sensor](https://www.renkeer.com/product/optical-water-leak-sensor/): Our optical water leak sensor uses optical technology to detect liquid leaks. It can monitor not only tap water and purified water, but also alcohol, gasoline, antifreeze, insulating liquids, and acidic or alkaline liquids. With high sensitivity, a compact size, and wide application versatility, it is suitable for various leak detection scenarios. Model: RS-SJ-*-5-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $16
- [Grain Moisture Sensor](https://www.renkeer.com/product/grain-moisture-sensor/): Our grain moisture sensor is designed to measure the humidity inside grain piles. Its 230 mm long steel probe can be inserted into bulk organic solid materials, enabling long term continuous monitoring. It is one of the core sensors in modern grain condition monitoring systems and is widely used for wheat, corn, rice, soybeans, tea leaves, and other crops. Model: RS-LSWS-N01-1-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $42
- [Multi-Parameter Water Quality Probe](https://www.renkeer.com/product/multi-parameter-water-quality-probe/): This multi parameter water quality probe features an integrated structural design that combines measurement modules for pH, electrical conductivity, temperature, salinity, and TDS with a built in signal processing unit. The design is simple yet highly functional. It includes automatic temperature compensation and offers protection up to IP68, making it suitable for long term use in water quality monitoring systems. Model: RS-PHEC5-N01-3-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $118
- [Hydrostatic Settlement Cell](https://www.renkeer.com/product/hydrostatic-settlement-cell/): These settlement cells are high-precision differential pressure hydrostatic level transmitters based on the principle of communicating vessels. By measuring the level variations of various monitoring points relative to a reference point, the system reflects changes in ground settlement. This setup enables long distance, automated, and continuous monitoring, providing reliable data support for engineering safety assessments. Model: RS-STA-YC-N01-1-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $105
- [Multi Channel Temperature Humidity Data Logger(-C3)](https://www.renkeer.com/product/multi-channel-temperature-and-humidity-data-logger/): The RS-WS-WIFI5-C3-Y*-*-EX series is a multi channel temperature and humidity data logger featuring WiFi wireless data transmission. It can collect up to four channels of temperature and humidity data and upload them to our free environmental cloud platform via a WiFi network, supporting both 2.4 GHz and 5 GHz dual band WiFi. Model: RS-WS-WIFI5-C3-Y*-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $68.8~$94
- [Particulate Matter Sensor](https://www.renkeer.com/product/particulate-matter-sensor/): This particulate matter sensor offers flexible configuration based on user requirements. It can operate as a single parameter sensor to monitor PM2.5, PM10, or temperature and humidity, or as a 3 in 1 sensor that simultaneously measures temperature, humidity, and PM2.5(optional CO₂ or atmospheric pressure). Featuring multiple output options and low power consumption, this transmitter is widely used in industrial facilities, traffic tunnels, and haze monitoring applications. Model: RS-*-*-BG/BGSMG-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $42~$113
- [Small WIFI Temperature Data Logger](https://www.renkeer.com/product/smart-temperature-and-humidity-data-logger/): Renke RS-YS-WIFI-C-LY-*-*-EX series is a compact, lightweight, and highly protected temperature and humidity data logger. It enables remote monitoring of temperature and humidity in refrigerated boxes, cold storage rooms, or homes. The external probe features a plug-in design, allowing flexible selection of different probes for various monitoring points. With strong data storage capability, it can store up to 65,000 readings. Model: RS-YS-WIFI-C-LY-*-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $48~$63
- [Long-stem temperature and humidity probe](https://www.renkeer.com/product/long-temperature-and-humidity-probe/): This long temperature and humidity probe features a stainless steel mesh filter that effectively protects against airflow impact and electrostatic interference. It is equipped with a high quality built-in chip to ensure high measurement accuracy. The probe includes current protection to prevent damage caused by reverse or incorrect power connections. It suitable for temperature and humidity measurement inside ducts or pipelines. Model: RS-WS-N01-9L-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $17
- [Odor Sensor](https://www.renkeer.com/product/odor-sensor/): Our odor sensor adopts a wall mounted installation method and is mainly used to measure odor concentration in landfills and restrooms. Odor is not a single gas component but a mixture of multiple gases. Our odor sensor is available in electrochemical type and semiconductor type, and can be used to detect smells from food decay, animal waste, and other odor sources in the environment. Model: RS-SG-*-*-*-2-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $90.2~$154
- [Total Suspended Solids Sensor](https://www.renkeer.com/product/tss-sensor/): Our Total Suspended Solids (TSS) sensor operates based on an optical measurement principle. A light source emits a beam into the water sample, where suspended particles cause the light to scatter. The TSS sensor detects the intensity of the light scattered back from these particles and compares it with internally stored calibration data. Through signal processing and linearization, the system calculates the concentration of suspended solids and outputs the final measurement result. Model: RS-SS-N01-2/3-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $210~$525
- [Water Color Sensor](https://www.renkeer.com/product/water-color-sensor/): RS-WSD-N01-1-EX is a cost effective water color sensor that stands out for its high color accuracy and excellent repeatability. It is based on the optical absorption principle and can detect subtle color changes. It features built in temperature compensation, delivering high accuracy and strong stability. The sensor adopts an integrated structural design with excellent waterproof performance, enabling reliable operation even in harsh environments. It is suitable for long term online color monitoring of water and wastewater. Model: RS-WSD-N01-1-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $419
- [3D Ultrasonic Anemometer](https://www.renkeer.com/product/3d-ultrasonic-anemometer/): The 3D ultrasonic anemometer is a three-axis wind sensor with no moving parts. It features a fully solid-state design that completely eliminates mechanical wear and tear. The device consists of three pairs of opposing ultrasonic transducers supported by stainless steel components, enabling precise measurement of both horizontal and vertical wind speed and direction. To meet diverse application needs, we offer four signal output options: RS485, 4-20mA, 0-5V, and 0-10V. Model: RS-CFSFX-*-3D-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $629
- [Capacitive Fuel Level Sensor](https://www.renkeer.com/product/capacitive-fuel-level-sensor/): Our capacitive fuel level sensor is a new type of continuous liquid level measuring instrument. It converts liquid level changes into capacitance variations and mainly consists of a sensor and a capacitance detection unit. Featuring a simple structure, no moving parts, and fast response, the capacitive level sensor is widely applicable for level measurement in gasoline tanks, diesel tanks, and water tanks. Model: RS-CYW-N01-1-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $66
- [Sound Sensor](https://www.renkeer.com/product/sound-sensor/): The RS-ZS-BZ-*-EX onboard sound sensor is primarily used for real-time noise measurement in various environments such as industrial sites, transportation, factories, construction projects, and public spaces. With this noise level meter, customers no longer need to worry about processing complex sound signals. Instead, they can focus on their areas of expertise and create value more efficiently. Model: RS-ZS-BZ-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $20
- [Small Tipping Bucket Rainfall Sensor](https://www.renkeer.com/product/optical-tipping-bucket-rainfall-sensor/): The small tipping bucket rainfall sensor is an independently developed and manufactured device by our company for measuring rainfall. It utilizes pulse principles to achieve high-precision rainfall measurement, with an accuracy of up to ±4%. This rain gauge features a compact design, requiring minimal space for outdoor installation. It is easy to install and operates with low power consumption. Model: RS-FYL*-*-1-EX MOQ: 1 PCS Delivery date: within 24 hours Price:$57~$72
- [Oil in Water Sensor](https://www.renkeer.com/product/oil-in-water-sensor/): The RS-OIL-N01-2-EX is an instrument designed to measure the concentration of oil substances in water. It utilizes fluorescence detection technology and outputs data in relative fluorescence units (RFU), facilitating the analysis of the correlation between fluorescence intensity and oil concentration in water. This oil in water sensor is equipped with a built-in temperature transmitter, enabling automatic temperature compensation for improved measurement accuracy. It is ideal for long-term monitoring of oil pollution in water environments. Model: RS-OIL-N01-2-EX MOQ: 1 PCS Delivery date: within 24 hours Price:$420
- [Soil Water Potential Sensor](https://www.renkeer.com/product/soil-water-potential-sensor/): This product measures soil water potential by detecting changes in pressure or tension within the sensitive element. It features advanced sensing technology for fast response and high accuracy. Constructed with ceramic materials, the soil water potential sensor effectively prevents signal drift caused by material degradation, eliminating the need for calibration or maintenance. With strong anti-interference capabilities, it ensures accurate measurements even in environments with fluctuations in temperature, humidity, or high salinity. Model: RS-SWP-N01-TR-1-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $105
- [COD Sensor](https://www.renkeer.com/product/cod-sensor/): Renke's COD sensors use the ultraviolet absorption method to monitor the chemical oxygen demand (COD) in solutions. It does not require chemical reagents, preventing secondary pollution. With fast response speed and high sensitivity, it is unaffected by chloride ions, ensuring greater accuracy. Designed with a focus on intelligence, high precision, and low maintenance, this COD sensor integrates IoT and cloud platforms to enable continuous water quality monitoring. Model: RS-COD-N01-2*-500-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $346
- [Radar Level Sensor](https://www.renkeer.com/product/radar-level-sensor/): The RS-RAD-N01-1-EX is a compact radar level sensor that uses non-contact measurement technology. With no moving parts, it offers stable operation and low maintenance, making it an ideal choice for industrial and commercial liquid measurements. The sensor uses non contact radar technology to calculate the distance between the liquid surface and the radar transmission point, as well as parameters such as distance change rate (radial velocity), azimuth angle, and height. Model: RS-RAD-N01-1-EX MOQ: 1 PCS Delivery date: within 24 hours Price:$147
- [LoRa Gateway](https://www.renkeer.com/product/lora-gateway/): The LoRa wireless data acquisition system utilizes spread spectrum communication and low-power LoRa wireless transmission technology, enabling multi-point and ultra-long-distance monitoring. It is suitable for long-range distributed environmental data collection. The LoRa gateway serves as the relay station of this system, collecting data from various monitoring points and uploading it in real time to the management platform. Model: RS-LGH-*-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price:$94~$157
- [Weighing Rain Gauge](https://www.renkeer.com/product/weighing-rain-gauge/): The Renke weighing rain gauge is a low power consumption, easy maintenance, and simple calibration outdoor meteorological instrument. Its data collection system can be optionally equipped with solar power supply, solving the power supply issues in remote areas. Our weighing rain gauge supports RS485 or pulse output, making it compatible with various data collection devices. Our products are strictly manufactured, assembled, and calibrated in accordance with the functional and specification requirements of weighing precipitation sensors. Model: RS-CYL-*-1-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $1677-1887
- [Road Condition Sensor](https://www.renkeer.com/product/road-condition-sensor/): The road condition sensor developed and produced by our company is a multifunctional device that can monitor road temperature, water accumulation, ice thickness and snow thickness. It adopts non-contact measurement method and will not damage the road. The lens has a built-in heating function, which can effectively prevent the lens from icing or frosting. The shell of the road condition sensor has been treated with anti-corrosion and is resistant to rain corrosion. The laser light source and the added filter design can effectively resist light source interference. Model: RS-LMK-N01-1-EX MOQ: 1 PCS Delivery date: within 24 hours Price:$1468
- [Radar Flow Meter](https://www.renkeer.com/product/radar-flow-meter/): Renke radar flow meter adopts the radar measurement principle to monitor water flow velocity, water level height, water volume and flow rate. Without the need to excavate riverbeds or contact water, it avoids siltation and corrosion, ensuring measurement accuracy. It is mainly used in situations where flow and water level monitoring are required, such as in canals and rivers. Model: RS-RAD-N01-3-EX MOQ: 1 PCS Delivery date: within 24 hours Price:$462
- [PV Weather Station](https://www.renkeer.com/product/pv-weather-station/): The RS-GFQXZ-EX is equipped with our full range of high-precision sensors to deliver a complete environmental monitoring solution, specifically designed to optimize photovoltaic (PV) power generation. This PV weather station supports multiple sensor configurations, including automatic solar radiation sensors, a temperature and humidity sensor, a wind speed and direction sensor, a barometric pressure sensor, and so on. Engineered for easy installation on any solar power project, the RS-GFQXZ-EX supports Modbus RTU communication and offers an optional Ethernet TCP connectivity for seamless data integration with solar monitoring systems. Model: RS-GFQXZ-EX MOQ: 1 PCS Delivery date: within 24 hours Price:$2775
- [Handheld Weather Station](https://www.renkeer.com/product/handheld-weather-station/): This handheld weather station is a weather monitoring device for emergency events. Its advantage is that it can be used immediately after it is turned on and is easy to move. It can directly monitor the wind speed, wind direction, temperature, humidity, atmospheric pressure and altitude in the environment without connecting power cords and signal cables. The monitoring data can be directly displayed on the LCD screen and automatically stored, which is convenient for administrators to export the data later. Model: RS-HSQXZ-USB-2-5S-EX / RS-HSQXZ-USB-2A-5S-EX MOQ: 1 PCS Delivery date: within 24 hours Price:$147~$189
- [Integrated Conductivity Sensor](https://www.renkeer.com/product/integrated-conductivity-sensor/): In order to meet the needs of customers who want to use their own software to obtain water quality data, we have developed this integrated conductivity sensor. It uses RS485 signal output, which is convenient for customers to access their own software. It can not only monitor the conductivity data in the solution, but also provide TDS and salinity values at the same time. It is a powerful and reliable solution conductivity sensor. Model: RS-EC-N01-3-EX MOQ: 1 PCS Delivery date: within 24 hours Price:$50
- [Portable Weather Station](https://www.renkeer.com/product/portable-weather-station/): In order to overcome the shortcomings of traditional weather stations that are complex and difficult to move, our company independently developed this portable weather station. It effectively integrates ultrasonic wind speed and direction with temperature, humidity, noise, atmospheric pressure, PM2.5&PM10(or CO2), rainfall(or light) and other sensors. It can monitor multiple meteorological elements in real time. With a color touch screen, you can manually set parameters and easily read values. Model: RS-HSQXZ-USB-1-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price:$485
- [Soil Heat Flux Plate](https://www.renkeer.com/product/soil-heat-flux-plate/): The soil heat flux plate, also called soil heat flux sensor. It can be used to measure the energy balance of the soil and the heat transfer through the soil layers. Renke soil heat flux sensor measure using a thermopile, which consists of two different metallic materials. The thermopile receives the thermal radiation and generates a temperature difference potential, which in turn leads to an algorithmic heat flux value. Model: RS-SHF-N01-TR-1-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $92
- [Chlorine Gas Sensor](https://www.renkeer.com/product/chlorine-gas-sensor/): Renke has developed a variety of chlorine gas sensors suitable for different environments, including wall-mounted chlorine gas sensor, duct type chlorine gas sensor and explosion-proof chlorine gas sensor. Multi wired and wireless output signal for your choose. Renke chlorine sensor can measure chlorine in the concentration range of 0~20ppm, 0~50ppm or 0~100ppm. Support customized OLED display, wire length and logo. Model: RS-CL2-*-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price:$85.7~$197.2
- [Differential Pressure Sensor](https://www.renkeer.com/product/differential-pressure-sensor/): The RS-YC-*-2D-*-EX and RS-YC-*-AL-*-EX differential pressure sensors are wall mounted models with a wide measuring range, optional from -10 kPa to 10 kPa, and are equipped with an LCD display. Our differential pressure sensor is designed with reverse polarity protection and instantaneous overcurrent and overvoltage protection, meeting EMI protection requirements. Widely used in pressure measurement in clean rooms, boilers, vacuum cleaners, air conditioners, etc. Model: RS-YC-*-2D-*-EX/RS-YC-*-AL-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price:$54.5
- [Dew Point Sensor](https://www.renkeer.com/product/dew-point-sensor/): Monitoring the dew point of compressed air or gas systems helps extend equipment service life and reduce maintenance costs. Installing a dew point sensor provides accurate dew point measurements for factory pipelines. We offer two models: RS-DEW-N01-S-EX and RS-DEW-N01-2-*-EX. These sensors are suitable for open environments such as meteorology and agriculture, and can also accurately monitor dew point inside equipment such as air compressors, refrigerated dryers, desiccant dryers, and air storage tanks. Model: RS-DEW-N01-2-*-EX/RS-DEW-N01-S-EX MOQ: 1 PCS Delivery date: within 24 hours Price:$25.2/$167.7
- [Turbidity Sensor](https://www.renkeer.com/product/turbidity-sensor/): Renke is a professional water quality sensor manufacturer. Our turbidity sensor uses an 860 nm infrared LED as the light source, which is not affected by water color and delivers more accurate measurement results. The overall housing has excellent waterproof performance, with a protection rating of up to IP68. It can be used for measuring rivers and streams, wastewater and sewage, sedimentation tank control, sediment transport research, and laboratory measurements. Model: RS-ZD-N01-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $116
- [Chlorophyll sensor](https://www.renkeer.com/product/chlorophyll-sensor/): The chlorophyll sensor adopts leading optical technology with an automatic cleaning brush, which can automatically monitor the chlorophyll content in water in real time. The blue-green algae sensor adopts the principle of the fluorescence method, which can play an early warning role in the reproduction of algae. Using RS485 output mode, the signal is stable and the data is accurate. Model: RS-CH-N01-2-EX / RS-BA-N01-2-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $252~$420
- [Monitoring Host](https://www.renkeer.com/product/monitoring-host/): The environmental monitoring host is the core of the server room monitoring system. It can collect data from monitoring units such as temperature and humidity sensors, smoke detectors, water leak detectors, and access control switches. Upload the data to the monitoring platform through wired or wireless transmission. The host can receive instructions from the monitoring platform and send them to various sensors or relays. In addition to the functions of data upload and command delivery, the monitoring host also has an over-limit alarm function. Model: RS-XZJ-100-Y-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $221.4
- [Snow Depth Sensor](https://www.renkeer.com/product/snow-depth-sensor/): This laser snow depth sensor is a digital snow depth measuring instrument. It works on the phase method laser ranging. The measurement data is uploaded to the remote monitoring platform through RS485/Ethernet/WIFI/LORA, and the user can view the real-time data on the computer or mobile phone. Model: RS-LSD-*-1-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $462
- [Industrial Vibration Sensor](https://www.renkeer.com/product/industrial-vibration-sensor/): There are high-performance MEMS chips in the vibration sensor, using embedded, temperature sensor, and vibration sensor technology. By measuring the vibration of mechanical equipment, it can reflect whether the machinery is in the best working condition. Widely used in rotating equipment such as reducer fans, generators, air compressors, centrifuges, and water pumps. Model: RS-WZ*-*-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $33~$147
- [Air Quality Monitor](https://www.renkeer.com/product/air-quality-monitor/): This integrated air quality monitor can monitor temperature, humidity, PM2.5, PM10, TSP, atmospheric pressure, light, noise, odor, TVOC, CO2, formaldehyde, O3, CO, CH4, O2, SO2, NO2 , H2, H2S, NH3 and other air quality indicators. Data upload via RS485, wifi and Ethernet. Mobile phone or computer to realize remote viewing of data. Model: RS-MS111-*-1-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $73.4~$686
- [Duct CO2 Sensor](https://www.renkeer.com/product/duct-mounted-co2-sensor/): This duct mounted CO2 sensor uses NDIR non-dispersive infrared technology for CO2 concentration measurement. In addition to the measurement channel, our product also adds a reference channel, and the measurement data is more accurate, which is better than most co2 sensors on the market.It is widely used in the monitoring of carbon dioxide concentration in the return air duct and the control of outdoor air intake. Model: RS-CO2-*-2FL-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $48~$58.5
- [Lora Soil Moisture Sensor](https://www.renkeer.com/product/lora-soil-moisture-sensor/): The RS-TR-LORAH-2-*-EX is a low power LoRa soil moisture sensor. It adopts our company's unique LoRa wireless communication protocol to avoid mutual interference in the signal transmission process between multiple measuring points. This LoRa soil sensor has a transmission distance of up to 3000 meters and strong signal penetration. It can monitor the moisture and temperature in the soil at the same time. It is the best choice for remote monitoring. Model: RS-TR-LORAH-2-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $75.5
- [Poratble Water Quality Meter](https://www.renkeer.com/product/portable-water-quality-meter/): Our portable water quality meter enables users to monitor and analyze water parameters anywhere, without chemical reagents or sending samples to a laboratory. It can flexibly connect to various RS485 water quality sensors, such as pH sensors, EC sensors, dissolved oxygen sensors, turbidity sensors, and more. Data are displayed in real time on the LED screen. The device features excellent data storage capacity, supporting up to 340,000 records. It is ideal for outdoor spot sampling and multi-point testing. Model: RS-xx-N01-HHT-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $155~$451
- [LoRa temperature sensor](https://www.renkeer.com/product/lora-temperature-sensor/): RS-WS-LORA-2-*-EX is a low-power LORA temperature and humidity sensor. It adopts the company's unique LORA wireless communication protocol, which avoids the signal interference between measurement points during the transmission process, and also solves the problem of low signal penetration. The battery of the Lora temperature sensor is replaceable (universal 3.6V lithium sub-battery). The shell adopts IP65 protection grade, which can meet the outdoor use. Model: RS-WS-LORA-2-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: USD 71.3
- [TVOC Sensor](https://www.renkeer.com/product/tvoc-sensor-for-air-quality-measuring/): RS-TVOC-*-2-4-EX TVOC sensor is an industrial-grade TVOC concentration monitor, which can check TVOC levels in real-time through our free cloud platform. Provide RS485 and analog two output methods to meet the needs of most users. The shell is a wall-mounted waterproof material, which can work normally even in harsh environments with severe dust. Model: RS-TVOC-*-2-4-EX MOQ: 1 PCS Delivery date: within 24 hours Price: USD 41.90
- [H2S Sensor](https://www.renkeer.com/product/h2s-sensor/): The RS-H2S-*-2-100P-EX H2S sensor is wall-mounted, the housing is dust-proof and waterproof, with a long using life. IP65 protection grade, can work normally in harsh environments. There is a temperature and humidity probe at the bottom to support measuring temperature, humidity and hydrogen sulfide at the same time. It is suitable for parking lots, garages, workshops, chemical plants, greenhouses, closed living places and other occasions. Model: RS-H2S-*-2-100P-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $33.8~$36.1
- [Atmospheric Visibility Sensor](https://www.renkeer.com/product/atmospheric-visibility-sensor/): Our visibility sensor adopts infrared forward-scatter technology, and it uses the proven 35° scatter angle to report the meteorological observable range (MOR) for fog and snow in the range of 5 to 10000 m (or 5-50000m/5-80000m). It combines a high specification with a very competitive price. Visibility sensors are often used in traffic, ports, wind energy, automatic weather stations and other industries. Model: RS-NJD-*-1-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $623~$791
- [Tilt Sensor & Inclinometer](https://www.renkeer.com/product/tilt-sensor/): RS-DIP-*-1-EX is a standard industrial-grade tilt sensor designed to measure the slope, angle, or tilt of an object. We offer both dual-axis and three-axis models, with options for digital or analog output signals and multiple installation configurations. These options allow customers to meet various requirements related to measurement range, signal type, and environmental conditions. The housing is made from durable, waterproof materials, enabling the inclination sensor to operate reliably even in harsh environments. Model: RS-DIP-*-1-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $20~$25
- [Residual Chlorine Sensor](https://www.renkeer.com/product/residual-chlorine-meter/): A residual chlorine sensor is a professional instrument used to measure the concentration of free chlorine in water, including hypochlorous acid (HOCl) and hypochlorite ions (OCl⁻). It adopts a three electrode design, which greatly reduces dependence on pH and no need for frequent calibration. We provide both the integrated chlorine sensor and industrial-grade chlorine meter, suitable for swimming pools, tap water plants, aquaculture, industrial wastewater, and many other application environments. Model: RS-CL-N01-3-*-EX/RS-CL-*-2-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $142~$153
- [PAR Sensor](https://www.renkeer.com/product/par-sensor/): Photosynthetically active radiation sensor is designed to measure light intensity at frequencies associated with photosynthesis. This par sensor has a measurement range of 0~2500μmol/m²·s and a wavelength range of 400~700nm. All aluminum shell material, good waterproof, can be used outdoor for long-term monitoring. Provide you with RS485/0-5V/0-10V/4-20mA and other signal output methods. Model: RS-GH-*-AL-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $50
- [Optical Rain Gauge](https://www.renkeer.com/product/optical-rain-gauge/): The Renke optical rain gauge series is a reliable and cost-effective choice for precipitation measurement. The overall size of the optical rain gauge is about the size of a tennis ball, and the internal sensor is completely sealed from the external environment. The delivery comes with mounting brackets that can be easily installed on weather stations, street lights and other infrastructure. Model: RS-GYL-*-1-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $55
- [ORP Sensor](https://www.renkeer.com/product/orp-sensor/): Our ORP sensor is an instrument designed to measure the oxidation reduction potential of solutions. Its combination electrode is made of high purity platinum, providing excellent resistance to acids, alkalis, and oxidation. Our ORP sensor features high measurement accuracy, fast response, and good long term stability, and it also includes a temperature measurement function. ORP sensors are often used in tandem with pH sensors, which measure the hydrogen ion activity in a solution. Model: RS-ORP-N01-3-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $73.4
- [Dissolved Oxygen Sensor](https://www.renkeer.com/product/dissolved-oxygen-meter/): Our RS-LDO*-N01-2-20-EX dissolved oxygen sensor is a device for measuring the concentration of dissolved oxygen in water. It adopts the principle of fluorescence measurement, does not consume oxygen, and does not require electrolytes. The dissolved oxygen measurement range is 0~20mg/L. Built-in temperature transmitter with automatic temperature compensation function. Model: RS-LDO*-N01-2-20-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $84
- [Smart Ultrasonic Weather Station](https://www.renkeer.com/product/smart-ultrasonic-weather-station/): This smart ultrasonic weather station is the integrated weather sensor that can calculate wind speed, wind direction, air pressure, air temperature, relative humidity, rainfall(or sunlight), and PM2.5&PM10(or CO2) concentration. Using ultrasonic principles and optional internal electronic pointers, the true wind speed and direction can be calculated. The UV-resistant and stable compact housing are completely waterproof and corrosion-resistant. Model: RS-FSXCS-N01-3H-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $206
- [Noise Sensor](https://www.renkeer.com/product/noise-sensor/): The RS-ZS-*-2-EX noise sensor is a high-precision sound measuring instrument that uses a high-sensitivity condenser microphone. The range is as high as 30dB~120dB, which meets daily measurement needs. There are two output modes: rs485 and analog (4-20ma, 0-5v, 0-10v). The installation is simple and the price is cheap. Model: RS-ZS-*-2-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $ 25.2
- [Temperature and humidity sensor](https://www.renkeer.com/product/temperature-humidity-sensor/): RS-WS-*-2D-*-EX temperature humidity sensor is a device used to measure temperature and relative humidity in the air, with an accuracy of ±0.5°C (25°C), ±3%RH(60%RH, 25°C). Optional signal output (RS485, 4-20mA, 0-5V, 0-10V), optional LCD liquid crystal display. Can be used with relays. Model: RS-WS-*-2D-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $25.2~$29
- [Water Conductivity Sensor](https://www.renkeer.com/product/water-conductivity-sensor/): RS-EC-*-2-*-EX water conductivity sensor is a device for measuring the conductivity of a solution. It has an automatic temperature compensation function that can compensate the conductivity of the current temperature to the specified temperature. According to the different applications, we provide two choices of stainless steel electrode and plastic electrode. There are rs485 and analog output options. Model: RS-EC-*-2-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $53~$94.3
- [Multi Layer Soil Sensor](https://www.renkeer.com/product/multi-layer-soil-sensor/): This multi-layer soil sensor can continuously measure soil conductivity, moisture content, and temperature at different depths for a long time. The data is transmitted to the free cloud platform via RS485 signal for remote real-time monitoring. The whole shell is made of stainless steel, which is effectively waterproof and corrosion-resistant. Message us for detailed manual. Model: RS-*-N01-TR-5-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $76~$147
- [Temperature Probe Sensor Housing](https://www.renkeer.com/product/sensor-housing/): We provide temperature probes and housings of various materials and sizes, with excellent workmanship and high quality. We provide any temperature probes and covers you need at low prices and support customization. Welcome to inquire us. MOQ: 1 PCS Delivery date: within 24 hours Price: $1~$5.3
- [Temperature Sensor Probes](https://www.renkeer.com/product/temperature-and-humidity-sensor-probe/): A temperature and humidity probe is a type of temperature and humidity sensor. We offer many different types of temperature and humidity sensor probes and these are used for different applications across a whole host of industries. Our temperature sensor probes are for sht20, sht30, sht35 sensors. The price is cheap, the workmanship is excellent, and it can effectively be waterproof and dustproof. Model: RS-SHT-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $4.5~$33.9
- [Leaf Wetness Sensor](https://www.renkeer.com/product/leaf-wetness-sensor/): This RS-WS-*-YM-1-EX leaf wetness sensor is standardized, calibrated, and designed to detect wetness and ice after installation. With denser leaf vein patterns on the surface, smaller droplets can be detected and the measurement is more sensitive. The sensor surface coating is non-hygroscopic, eliminating false wetness detection. Model: RS-WS-*-YM-1-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $31.5
- [4 in 1 soil nutrient sensor](https://www.renkeer.com/product/soil-nutrient-sensor/): This integrated soil nutrient sensor can measure soil moisture, electrical conductivity, temperature, and pH elements at the same time. It can be used for long-term and stable measurement of soil conditions in a fixed area at a cheap price. Using RS485 Modbus standard protocol, the signal is stable. Model: RS-ECTHPH-N01-TR-1-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $32.5
- [Soil Tensiometer](https://www.renkeer.com/product/soil-tensiometer/): This soil tensiometer uses the principle of negative pressure to measure soil moisture and studies soil moisture movement from an energy perspective. The transparent PVC pipe can clearly see the water volume, and the low end is equipped with a high-quality clay head, which is fast and airtight, and the measurement is accurate. We offer rs485 soil tension meter and 4-20ma soil tension meter for your choice. Model: RS-TRZL-*-1-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $73~$92.5
- [Industrial water pH sensor](https://www.renkeer.com/product/industrial-water-ph-sensor/): The industrial water PH sensor (RS-PH-*-2-*-EX) is a device for measuring the pH value (hydrogen ion concentration index, pH) of a solution. With automatic temperature compensation function. It is suitable for industrial sewage, domestic sewage, agriculture, aquaculture, and other scenarios in a non-corrosive weak acid and weak alkali environment. The output signal has RS485, 4-20mA, 0-5V, 0-10V. Model: RS-PH-*-2-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $77.60
- [Water Level Staff](https://www.renkeer.com/product/water-level-staff/): It is a device that uses an advanced processor chip as the controller. Obtain data by measuring the water level of the electrode, with extremely high accuracy and anti-interference ability. Water level gauges can be used for monitoring and control in civil projects such as underground garages, underground shopping malls, ship cabins, irrigation, and aquaculture. Model: RS-DR-*-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $117.4~$1019
- [Water Level Sensor](https://www.renkeer.com/product/water-level-sensor/): Renke level sensors are designed to industrial standards for monitoring water level, oil level, and other non corrosive liquids. The level probe is made of stainless steel, and the signal cable is protected with insulated rubber, achieving an IP68 rating for use in harsh environments. This water level sensor offers multiple output options, including RS485 and analog signals(4-20 mA, 0-5 V, and 0-10 V). Model: RK-PM200-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $45.8~$84
- [Explosion-proof Pressure Sensor](https://www.renkeer.com/product/explosion-proof-pressure-sensor/): Our explosion-proof pressure sensor adopts laser resistance trimming temperature compensation process, which has higher measurement accuracy and more stability. It has reverse polarity protection and instantaneous overcurrent and overvoltage protection, and meets EMI protection requirements. It has reliable quality, small size and high cost performance. It can be equipped with LCD display for easy on-site data reading. It can be used to measure gauge pressure, negative pressure, and absolute pressure. Model: RK-PM400-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $51.4~$110
- [Industrial Pressure Sensor](https://www.renkeer.com/product/industrial-pressure-sensor/): This pressure sensor features a compact form factor and are easy to install. The stainless steel housing provides isolation and corrosion protection, making them suitable for gases or liquids that are compatible with the wetted materials. They support gauge, vacuum, and absolute pressure measurements. An optional Hirschmann connector is available to simplify field wiring. Model: RK-PM301-*-N01-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $33~$88
- [AQI Sensor](https://www.renkeer.com/product/aqi-sensor/): This is an air quality index (AQI) sensor independently developed by our company. It can detect multiple factors, including temperature, humidity, PM2.5, PM10, air pressure, light, TVOC, CO2, formaldehyde, O3, CO, CH4, O2, SO2, NO2, H2, H2S, and NH3, covering virtually every indicator of air quality. This multifunctional AQI sensor integrates multiple measurement elements and can monitor up to 14 simultaneously. Model: RS-MG111-*-1-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $45~$499
- [Duct Type Wind Speed Sensor](https://www.renkeer.com/product/duct-type-wind-speed-sensor/): This air velocity sensor is a device used to measure the wind speed in the pipe. The air velocity sensor operates on the hot-wire anemometer principle. Using a self-developed high-precision wind speed measurement unit, it is sensitive and can quickly and accurately measure small air flows, with good stability, small drift, and high accuracy. Model: RS-FS-*-9TH-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $60.8
- [Industrial Noise Detector](https://www.renkeer.com/product/industrial-noise-detector/): This long rod noise detector is a high-precision sound measurement instrument with a range of 30dB to 120dB. It features a 304 stainless steel housing and a built-in high-precision sensor. Its high sensitivity and high and low-frequency acquisition capabilities allow it to quickly capture dynamic and subtle sounds. Renke noise detector are widely used in industrial noise monitoring. Model: RS-ZS-*-FL-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $40
- [PIR Motion Sensor](https://www.renkeer.com/product/pir-motion-sensor/): Our ceiling mounted PIR motion sensor can detect the target area in a 360° cone. To meet the needs of different users, we provide two detection principles: infrared light and microwave. The infrared motion sensor uses PIR pyroelectric elements, which are low in cost and good in stability. The microwave motion sensor uses 24GHz millimeter wave radar, which is not affected by the environment, temperature, dust, and has a low false alarm rate. Model: RS-HW-N01-3-EX / RS-WB-N01-3-EX / RS-HWB-N01-3-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $17~$19
- [Smoke Detector RS485](https://www.renkeer.com/product/smoke-detector-rs485/): It is a device that uses the photoelectric principle to detect the smoke generated during a fire. The accuracy of photoelectric smoke detectors usually does not cause so many false alarms. This smoke detector is installed through wiring, which avoids the late-night call caused by battery replacement. The alarm uses photoelectric smoke devices and excellent production technology, stable work, simple installation, no need to debug. Model: RS-YG-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $33.5
- [USB to RS485 Converter](https://www.renkeer.com/product/usb-to-rs485-converter/): It is an industrial grade converter that extends one RS-485 interface via USB. Enables RS-485 devices to be easily connected to a host computer with a USB interface. The transparent transmission mode provided by the virtual serial port enables the application written for the standard computer serial port to be connected to the RS-485 device without any modification. This USB to rs485 converter price is cheap. Model: RS-USB-485-3-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $6.71
- [Analog to RS485 Converter](https://www.renkeer.com/product/analog-to-rs485-converter/): Analog to rs485 converter can be achieved between the sensor and the host signal acquisition, used to detect analog signals. Application in the 485 bus industrial automation and control systems, can monitor 4 ~ 20mA / 0 ~ 5V / 0 ~ 10V signal. Safe, reliable, beautiful appearance, easy installation. Model: RS-*-485-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $10.5
- [Positioning Water Leakage Detector](https://www.renkeer.com/product/positioning-water-leakage-detector/): This is a positioning water leakage detector that uses the standard Modbus RTU protocol and is compatible with leak detection ropes ranging from 5 to 200 meters. When the rope detects a leak, the device immediately triggers an alarm and activates the relay, which can be connected to external audible and visual alarms. The LCD screen displays the leak location in real time. Model: RS-SJ-DW-N01R01-1-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $42
- [Industrial Water Leak Detector](https://www.renkeer.com/product/industrial-water-leak-detector/): RS-SJ-*-2-*-EX is an industrial-grade water leak detector featuring an ABS waterproof enclosure with an IP65 protection rating. It is designed to detect water on floors, around pipelines, and beneath raised flooring systems. The sensor utilizes a unique alternating-current detection technology, which effectively prevents electrolysis and device degradation, significantly extending the service life of the sensor. As a dedicated manufacturer, we offer customization options and support for secondary development. Model: RS-SJ-*-2-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $19~$25
- [Non contact infrared temperature sensor](https://www.renkeer.com/product/infrared-temperature-sensor/): What is an infrared temperature sensor? The infrared temperature sensor can calculate the surface temperature of the object by measuring the intensity of the infrared radiation emitted by the target. Non-contact temperature measurement is the biggest advantage of infrared thermometers, allowing users to easily measure targets that are difficult to approach or move. We offer infrared temperature sensor RS485 and infrared temperature sensor 4 20ma two types. Model: RS-WD-HW-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $52.4~$167.7
- [Industrial Negative Ion Tester](https://www.renkeer.com/product/industrial-negative-ion-tester/): This is a cheap industrial-grade negative ion tester meter. It uses an external power supply to directly measure and display the number of negative ions. Small size and easy to move. It can be used with an outdoor weather station. Can measure indoor or outdoor negative ions. Model: RS-NEGO-N01-1-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $256
- [Negative Ion Detector](https://www.renkeer.com/product/negative-ion-detector/): Negative ion detector with color touch screen, real-time display of negative oxygen ion concentration in the air, optional measurement elements such as temperature and humidity, formaldehyde, PM, TVOC, optional select data storage and U disk export function. The equipment adopts standard MODBUS-RTU communication protocol, RS485 signal output, accurate measurement. Model: RS-NEGO-N01-2*-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $235~$465
- [Evaporation Sensor](https://www.renkeer.com/product/evaporation-sensor/): This evaporation sensor adopts a double-layer stainless steel structure design, which can prevent evaporation errors caused by direct sunlight, and has a higher accuracy value than others. It is an instrument used to observe water surface evaporation. High sensitivity, and wide range. It can quickly and accurately measure the evaporation of water per unit area. Model: RS-EVA-*-2-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $136
- [Ultrasonic Weather Station](https://www.renkeer.com/product/ultrasonic-weather-station/): This ultrasonic weather station is a compact, all-in-one device composed of three parts: an optical rain gauge (or light sensor) at the top, an ultrasonic anemometer in the middle, and a solar radiation shield at the bottom. The ultrasonic anemometer features a built-in electronic compass for easy installation. Inside the solar radiation shield are various meteorological sensors for measuring temperature, humidity, noise, atmospheric pressure, pm2.5 & pm10 (or CO2). Model: RS-FSXCS-N01-1H-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $158~$260
- [Integrated Weather Station](https://www.renkeer.com/product/integrated-weather-station/): It is a low cost weather station that is suitable for customers to conduct short-term or long-term environmental monitoring and data recording in different locations. The integrated weather station is small in size, light in weight, the outer shell is made of high-quality anti-ultraviolet materials, and has a long service life. The bottom is equipped with a high-sensitivity probe, the signal is stable and the measurement accuracy is higher. Model: RS-FSXJT-N01-1-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $161~$172
- [Weather Station Professional](https://www.renkeer.com/product/weather-station-professional/): This is a professional fixed weather station designed to deliver reliable and accurate environmental monitoring. With enhanced sensors and customizable options, it perfectly meets the needs of commercial, industrial, educational, and government applications. You can freely configure it to monitor wind speed, wind direction, rainfall, UV radiation, solar radiation, atmospheric pressure, temperature, humidity, noise, light intensity, soil moisture, and more. Integrated and ultrasonic weather station models are also available. Model: RS-QXZM-*-DC-12-ETH-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $1123
- [Solar Radiation Shield](https://www.renkeer.com/product/solar-radiation-shield/): This radiation shield is commonly used in weather stations to protect meteorological sensors from direct sunlight and rain exposure. Designed with densely distributed ventilation openings, it ensures accurate and reliable measurement results by maintaining proper airflow. A single solar radiation shield can integrate multiple sensors, including the temperature and humidity sensor, light sensor, noise sensor, barometric pressure sensor, PM2.5 & PM10 sensor, and CO₂ sensor, etc. Model: RS-BYH-M-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $27~$101
- [Soil Moisture Sensor](https://www.renkeer.com/product/soil-moisture-sensor/): Soil sensors are an important tool for detecting soil health, which can reflect the current soil moisture, temperature, salinity, or fertility in real-time. Provide data support for soil moisture monitoring, agricultural irrigation, and forestry protection industries. We offer soil moisture sensor, soil temperature and humidity sensor, soil temperature moisture and EC sensor for you choose Model: RS-SD-*-TR-1-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $19~$29
- [Soil PH Sensor](https://www.renkeer.com/product/soil-ph-sensor/): The soil pH sensor is a device that measures the current pH of the soil. It detects the pH value of the soil by inserting two stainless steel probes vertically into the soil. We offer rs485 soil ph sensor, 0-5V soil ph sensor, 0-10V soil ph sensor, and 4-20ma soil ph sensor. This sensor can be used with our soil analyzer. Model: RS-PH-*-TR-1-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $30
- [Soil Moisture Meter](https://www.renkeer.com/product/soil-moisture-tester/): The working principle of the soil moisture tester is very simple, long-press the top power button to turn it on, only need to insert the metal probe into the soil. The LCD will display the value, from which you can quickly understand the moisture content of the soil. Based on the readings and their relationship to the plants, you can decide whether you need watering. We offer soil moisture meter and soil ph meter for you. Model: RS-*-SC-2-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $20.4~$25
- [Soil Analyzer](https://www.renkeer.com/product/portable-soil-analyzer/): This is an intelligent handheld soil data logger. It can be used together with different soil sensors, such as a soil moisture sensor, soil temperature and humidity sensor, 4-in-1 soil sensor, soil pH sensor, or multi-depth soil sensor. The soil analyzer can store up to 1,000,000 data records at a time. It has a built-in rechargeable battery for repeated use. The soil analyzer comes with a carrying case for easy portability. It is a highly recommended soil testing device. Model: RS-TRREC-N01-1-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $136.3
- [Multi-Depth Soil Sensor](https://www.renkeer.com/product/multi-depth-soil-moisture-sensor/): Our RS485 multi-depth soil temperature, moisture and EC sensor that can dynamically observe soil conditions at different depths. The measure depth can be customized. This multi-depth soil moisture sensor has a variety of probe lengths and can be used to measure depths from 30 cm (11 in) to 100 cm (40 in). It can quickly collect soil moisture, temperature and conductivity information. Model: RS-*W*S-N01-TR-6-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $99~$118
- [Ultrasonic Wind Sensor](https://www.renkeer.com/product/ultrasonic-wind-speed-direction-sensor/): The ultrasonic wind speed direction sensor is a wind speed and direction measuring instrument developed based on the principle of ultrasonic waves. It uses the transmitted sound wave pulse to measure the time or frequency (Doppler transform) difference at the receiving end to calculate Wind speed and direction. The sensor can simultaneously measure the instantaneous values of wind speed and wind direction. Model: RS-CFSFX-*-2H-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $132
- [Ultrasonic Anemometer](https://www.renkeer.com/product/ultrasonic-anemometer/): It is a small ultrasonic anemometer for outdoor measurement of wind speed and direction. It has no movable parts, compact design, high protection level, easy to install, and can be used in harsh environments. This ultrasonic anemometer price is very cheap and meets the needs of most users. Model: RS-CFSFX-*-3H-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $90
- [Aluminum Wind Direction Sensor](https://www.renkeer.com/product/aluminum-wind-direction-sensor/): The aluminum wind direction sensor is used to measure the wind direction in the outdoor environment, it can measure 360°, or measure the 8 directions and 16 directions of east, south, west, north, southeast, southwest, northwest, and northeast. It can output Modbus signal, voltage, and current three kinds of signals according to demand. Model: RS-FXA-*-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $32
- [Aluminum Wind Speed Sensor](https://www.renkeer.com/product/aluminum-wind-speed-sensor/): This aluminum wind speed sensor shell is made of high-quality aluminum alloy profiles, and the exterior is sprayed with plastic. It has good anti-corrosion and anti-corrosion characteristics, which can ensure the long-term use of the transmitter without corrosion. We offer rs485 wind speed sensor, 4-20mA wind speed sensor, 0-5V wind speed sensor, 0-10V wind speed sensor, pulse wind speed sensor. Model: RS-FSA-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $30
- [Polycarbon Wind Direction Sensor](https://www.renkeer.com/product/polycarbon-wind-direction-sensor/): The wind direction sensor is a physical device that detects and feels the wind direction information from the outside by the rotation of the wind direction arrow and transmits it to the coaxial encoder, and at the same time outputs the corresponding wind direction related value. Model: RS-FXJT-*-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $23
- [Polycarbon Wind Speed Sensor](https://www.renkeer.com/product/polycarbon-wind-speed-sensor/): Our wind speed sensor, small and light, easy to carry and assemble. The three-cup design concept can effectively obtain wind speed information. The shell is made of polycarbonate composite material, which has good anti-corrosion and anti-corrosion features, which can guarantee the long-term use of the anemometer is free from rusting, and the internal smooth bearing system ensures the accuracy of information collection. Model: RS-FSJT-*-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $23
- [Stainless Steel Rain Gauge](https://www.renkeer.com/product/stainless-steel-rain-gauge/): The stainless steel rain gauge is recognized to be the standard for measuring rainfall and other precipitation in hydrological and environmental testing. The internal tipping bucket structure provides high accuracy in various rainfall intensity ranges. According to different materials, we have three types of tipping bucket rain gauge: all stainless steel rain gauge, semi-stainless steel rain gauge, and ABS plastic rain gauge. Model: RS-YL*-*-4-EX / RS-YL-*-5-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $79~$94
- [ABS Rain Gauge](https://www.renkeer.com/product/abs-tipping-bucket-rain-gauge/): It is a plastic rainfall gauge on a weather station. Compared with the standard stainless steel tipping bucket rain gauge, it is a more commercial rain gauge with a low price. It adopts the working principle of the standard tipping bucket rain gauge, but due to material problems, accuracy and service life are slightly lower than stainless steel rain gauge. If you are a beginner in the rain gauge, or if you have a limited budget and want to buy a cheap rain gauge, then our abs tipping bucket rain gauge will be your best choice. Model: RS-YL*-*-2-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $34
- [Atmospheric Pressure Sensor](https://www.renkeer.com/product/atmospheric-pressure-sensor/): This atmospheric pressure sensor adopts an imported high-precision measuring unit. The device has built-in high-precision temperature compensation, high stability, low drift, and high repeatability. It can be easily fixed to the wall by wall-mounted housing. It is suitable for places where atmospheric pressure measurement is required, such as altimeters, agricultural greenhouses, weather station, archives, etc. Model: RS-QY-*-2D-LCD-EX MOQ: 1 PCS Delivery date: within 24 hours Price: USD 28.30
- [Rain and Snow Sensor](https://www.renkeer.com/product/rain-and-snow-sensor/): RS-YUX-*-H-EX rain and snow sensor is a qualitative measuring device that measures whether it rains or snows outdoors or in nature. It has high sensitivity and an internal automatic heating mode, which can effectively prevent measurement errors caused by freezing on the surface of the sensor in cold weather. Model: RS-YUX-*-H-EX MOQ: 1 PCS Delivery date: within 24 hours Price: $22~$26

## Pages
- [Agricultural sensors](https://www.renkeer.com/agricultural-sensors/): Home -
- [Best Rain Gauges for Korea](https://www.renkeer.com/best-rain-gauges-for-korea/): Shandong Renke Control Technology Co.,Ltd.는 15년 이상의 연구 개발 및 생산 경험을 보유한 전문 환경 모니터링 장비 제조업체로, 국내 선도적인 브랜드입니다. 건설 현장, 수자원 및 기상 부문의 강우량 모니터링 요구를 충족하기 위해, 자사는 틸트식 강우량계, 광학식 강우량계, 중량식 강우량계 등 다양한 유형의 제품을 연구 개발 및 생산하였습니다. 이 중 틸트식 강우량계는 단일 버킷형과 이중 버킷형 두 가지 모델로 설계되어 있으며, 최대 정밀도는 ≤±1%에 달할 수 있습니다. Renke의 틸트식 강우량계는 집수구, 내경 치수, 칼날 각도 및 제작 공정 등 모든 요소를 기상 부서의 기준에 따라 엄격하게 설계하였으며, 고객이 기상 부서에 제품 검정을 의뢰할 수 있도록 지원합니다. 현재 당사의 틸트식 강우량계는 총 강우량, 당일 강우량, 순간 강우량, 시간당 강우량, 24시간 최대 및 최소 강우량 등 다양한 데이터를 모니터링할 수 있으며, 수자원청, 기상청, 대학 캠퍼스, 건설 현장 등 다양한 분야에 널리 활용되고 있습니다.
- [Weather Station for Sale](https://www.renkeer.com/weather-station-for-sale/): O RS-FSXCS-N01-1H-*-EX é uma estação meteorológica ultrassônica projetada para navegação e aviação. Sem partes móveis, não requer manutenção ou calibração no local. É capaz de monitorar simultaneamente a velocidade e a direção do vento, radiação solar, precipitação, temperatura, umidade, ruído e dados de PM2.5. Ele usa tecnologia ultrassônica para medir a velocidade e a direção do vento com alta precisão. Compacto e leve. Esta estação meteorológica é fácil de instalar e seu invólucro é feito de material resistente a UV, garantindo uma longa vida útil.
- [Renkeer Privacy Policy](https://www.renkeer.com/privacy-policy/): If you have additional questions or require more information about our Privacy Policy, do not hesitate to contact us.
- [Solutions](https://www.renkeer.com/solutions/): Renke has designed hundreds of perfect monitoring solutions for more than 20 fields at home and abroad over the past 30 years. The monitoring solution scope covers agricultural irrigation, water quality monitoring, data center environment, warehouse security, scenic area meteorology, and more. The company has accumulated a wealth of industry application experience and can provide customers with reliable, accurate, and easy-to-maintain complete products and solutions.
- [Water treatment sensors](https://www.renkeer.com/water-treatment-sensors/): Water treatment sensors are used to monitor water quality. Renke has established several complete water quality monitoring systems. It can be used in aquaculture, sewage treatment, tap water treatment, food, pharmaceutical, environmental protection, etc. You can choose water quality electrodes by yourselves, or you can contact us to provide you with the best solution.
- [Thanks](https://www.renkeer.com/thanks/): Thank you for your message and trust, we will reply you as soon as possible.
- [Accessories](https://www.renkeer.com/accessories/): The accessories are mainly used with various sensors, for example, the conversion module is used to realize the signal conversion of various sensors. Measure the temperature and humidity in different places and replace different probes and housing. They are cheap and practical.
- [Level&Pressure sensors](https://www.renkeer.com/level-and-pressure-sensors/): Our level sensors and pressure sensors can be used in most solutions. Used to measure pressure at different depths of liquids. High protection level and long service life. It can be used with a digital display to view data in real-time.
- [Safety sensors](https://www.renkeer.com/safety-sensors/): Home -
- [Gas sensors](https://www.renkeer.com/gas-sensors/): We are a professional gas sensor and detector manufacturer. At present, the gas sensors produced by the company can measure gases like CO2, CO, O3, O2, H2S, H2, CH4, NH3, SO2, NO2, TVOC, CH2O, SF6, TSP, and PH3. According to different applications, there are wall-mounted, fixed, hand-held, and duct-type. Customized service is available.
- [Soil sensors](https://www.renkeer.com/soil-sensors/): We offer many soil sensors that monitor soil temperature, moisture, ph, conductivity, and more. Accurate and responsive. Realize remote monitoring through wired or wireless data transmission. Widely used in automatic irrigation systems for gardens, farmland, landscape, etc. Renke is soil moisture monitoring expert with more than 15 years experience. We glad to offer technology and equipment solutions for you. Now, look through our below soil sensors list and choose one to check detailed price and description.
- [Solar radiation](https://www.renkeer.com/solar-radiation/): To measure solar radiation, we produce solar radiation sensors, photosynthetically active radiation sensors. According to different measurement principles, solar radiation sensors include photoelectric solar radiation sensors and pyroelectric solar radiation sensors.
- [Wind sensors](https://www.renkeer.com/wind-sensors/): Wind sensors mainly measure wind speed and direction. The most commonly used is the mechanical and ultrasonic integrated type. We have aluminum shell wind speed and direction sensors, polycarbonate wind speed and direction sensors, ultrasonic wind sensors and duct wind speed sensors for your choice. Our signal output modes include RS485, 4-20mA, 0-5V, 0-10V, pulse, etc.
- [Rain sensors](https://www.renkeer.com/rain-sensors/): Home -
- [Weather sensors](https://www.renkeer.com/weather-sensors/): Weather sensors are single measurement unit that constitutes a weather station. Our company has a complete set of meteorological sensors, that measure meteorological elements such as temperature, humidity, air pressure, rainfall, soil, light, ultraviolet rays, radiation, wind speed and direction. Which can be used for meteorological research in agriculture, industry, aerospace, navigation and other fields.
- [Weather stations](https://www.renkeer.com/weather-stations/): Buy the best weather station from Renke, which is professional environmental monitoring expert with advanced weather stations and sensors. Our fixed weather stations and ultrasonic weather stations measure a wide range. Integrated wind speed, wind direction, temperature, humidity, rainfall, evaporation, solar radiation, UV, light, noise, PM2.5&PM10, CO2, PAR, pressure, soil temperature and humidity, ph and conductivity, etc.
- [Ambient sensors](https://www.renkeer.com/ambient-sensors/): Home -
- [Temperature data loggers](https://www.renkeer.com/temperature-data-loggers/): Data loggers for temperature and humidity are capable of measuring data at defined intervals. And then stored in integrated data memory. We provide a variety of data loggers with powerful battery life for cold chain transportation, warehouse monitoring, medical storage, etc. There are also ultra-low temperature and ultra-high temperature data loggers suitable for special environments.
- [Temperature sensors](https://www.renkeer.com/temperature-sensors/): Renke offers a variety of temperature sensors, temperature and humidity sensors. The output methods involve RS485, analog, Ethernet, WIFI and Lora. The measurement range covers minus 300 degrees to plus 1200 degrees. It can be used in various fields such as home, industry, meteorology, agriculture, fresh air ducts, etc. Support customized service.
- [Products](https://www.renkeer.com/products/): Renke has a wide variety  of products, including: temperature and humidity sensors (recorders), weather stations, weather sensors, water quality sensors, gas detectors (sensors), air quality sensors, converters&probes and more than 100 products. Meet monitoring standards in areas such as home, office, industry, agriculture and environmental protection. All products can provide customized services.
- [Blogs](https://www.renkeer.com/blogs/): Home -
- [About us](https://www.renkeer.com/about/): Shandong Renke Control Technology Co., Ltd. ㅡ Leading Global Provider of Advanced Environmental Monitoring & Industrial IoT Solutions
- [Contact us](https://www.renkeer.com/contact/)
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## Posts
- [AI Is Reshaping Liquid Cooling and Water Quality Monitoring](https://www.renkeer.com/ai-reshapes-liquid-cooling-and-water-quality-monitoring/): When a single GPU’ s power consumption skyrockets past 1,000 W, and when the power of a single rack surges to 200 kW, can traditional air cooling still keep up? ASHRAE states that when rack power reaches approximately 50-120 kW or higher, traditional air cooling struggles to meet thermal management demands. Consequently, liquid cooling technology has evolved from an optional feature in data centers to a necessity in the era of high-density computing.
- [Top 5 Rain Sensor Types and Selection Guide](https://www.renkeer.com/rain-sensor-types-and-selection-guide/): A rain sensor is a device that detects whether it is raining and measures the amount of rainfall. From automatic windshield wiper systems and weather stations to flood early warning systems, rain sensors are widely used in various aspects of industry and daily life. Are you feeling overwhelmed in the midst of all the options for rain sensors? Which sensor will be able to provide accurate readings in freezing weather? Does it measure precipitation both rain and snow? Which one is right for you for price?
- [Why Monitoring Soil Moisture at Multiple Depths Improves Irrigation Efficiency](https://www.renkeer.com/monitoring-soil-moisture-at-multiple-depths/): Monitoring soil moisture is crucial for modern agriculture. An increasing number of farms are installing soil moisture sensors to monitor soil moisture levels in real-time and make irrigation decisions accordingly, to maximise irrigation efficiency, save water resources and promote crop growth.
- [IoT Devices: Components, Protocols, and Applications](https://www.renkeer.com/iot-devices/): "IoT devices" is one of the most familiar terms in the tech world today. From the smartwatch on your wrist to the robot vacuum in your living room, and the machinery humming on a factory floor, everything seems to be connected.
- [What Is the Difference Between a Free Chlorine Sensor and a Total Chlorine Sensor?](https://www.renkeer.com/free-chlorine-sensor-vs-total-chlorine-sensor/): This article provides a professional overview of the differences between a free chlorine sensor and a total chlorine sensor, helping you choose the most suitable chlorine sensor for your application.
- [IoT in Smart Agriculture](https://www.renkeer.com/iot-in-smart-agriculture/): Modern agriculture is already operating at a data driven and automated level, where irrigation, greenhouse control, and field management are increasingly executed based on real time environmental sensing rather than manual observation or fixed schedules. IoT in smart agriculture provides the sensing infrastructure that enables this shift, turning soil and microclimate conditions into continuous digital inputs for automated farming systems.
- [Five Ways to Install Vibration Sensors](https://www.renkeer.com/five-ways-to-install-vibration-sensors/): During operation, mechanical equipment (such as motors, pumps, and fans) vibrates due to imbalances, wear, loosening of internal parts, or changes in external loads. This vibration causes changes in physical quantities such as velocity, displacement, and acceleration of the mechanical structure. To monitor whether these changes deviate from the normal state, temperature and vibration sensors (integrating vibration and temperature measurements) are widely used as key "sensory terminals" for equipment condition monitoring.
- [Know More About Aquarium pH Management](https://www.renkeer.com/aquarium-ph-management/): Maintaining an ideal pH range in an aquarium is a difficult yet vital task. Because pH levels that are too high or too low can cause significant stress to fish and even impact their health, it is essential to understand how to effectively adjust and stabilize water quality. This guide will explain in detail the effects of aquarium pH levels and how to adjust them safely.
- [Digital vs Analog Temperature and Humidity Sensor](https://www.renkeer.com/digital-vs-analog-temperature-and-humidity-sensor/): Temperature and humidity sensors are among the most basic sensing devices widely used in commercial, industrial, and residential setups. Traditionally, temperature sensing was done through RTDs, thermocouples, NTCs, and analog sensors. But with innovations in embedded systems, IoT, and robotics, the need for digital temperature and humidity sensor has grown ever since.
- [Pressure Transducer: Working Principle, Types, and Selection Guide](https://www.renkeer.com/pressure-transducer-working-principle/): A pressure transducer is a device that measures the pressure of a gas or liquid and converts it into an electrical signal. This signal can be read by instruments such as controllers, monitoring systems, or computers to display pressure values or support automatic control.
- [Total Suspended Solids in Water Monitoring](https://www.renkeer.com/what-is-total-suspended-solids/): Total suspended solids (TSS) in water consist of a wide range of particulate materials, including microorganisms such as bacteria and algae, as well as inorganic particles like clay, silt, sand, and gravel. These particles vary in size, density, and settling behavior, which determines how long they remain suspended in water.
- [CO2 Sensors: How to Choose Wisely](https://www.renkeer.com/how-to-choose-co2-sensors/): In the field of gas monitoring, carbon dioxide gas concentration is a critical parameter. CO2 sensors are used in industrial, agricultural, and residential settings alike. In greenhouses or mushroom farms, they ensure that plants grow under optimal CO2 levels. In factories or production workshops, they provide timely alerts when concentrations deviate from safe ranges, preventing potential safety hazards.
- [Know More About Infrared Radiation](https://www.renkeer.com/what-is-infrared-radiation/): Infrared radiation is everywhere in our daily life, from the infrared energy emitted by the sky, to the natural radiation of the human body, and even to distant planets in outer space. It exists in different forms throughout the universe. Atmospheric infrared radiation originates from the scattering of sunlight by the atmosphere and from the Earth’s own thermal emission, showing distinct characteristics between day and night. The human body, as a natural infrared source, continuously emits and absorbs infrared radiation. This radiation not only helps regulate body temperature, but also carries important information related to life processes.
- [Why the Frequency Response Range Is Critical for Vibration Monitoring?](https://www.renkeer.com/frequency-response-range-for-vibration-monitoring/): Vibration monitoring is an effective method for assessing the condition of mechanical equipment and performing fault diagnosis. By installing vibration sensors with an appropriate frequency response range at critical locations such as bearing housings, vibration data can be accurately collected, ensuring that key characteristic frequencies generated during operation are captured. Intelligent software then analyzes the vibration data to identify fault locations and enable timely maintenance.
- [Dissolved Oxygen Sensor Working Principle and Calibration](https://www.renkeer.com/what-is-dissolved-oxygen-sensor/): In water that are not polluted by oxygen consuming substances, mainly organic matter, dissolved oxygen is usually at or near saturation. For instance, if the surface water is transparent a dissolved oxygen should be near saturation level. If the concentration of organic matter in water is high, then the process of consuming oxygen will be more than the process of adding oxygen. This causes the dissolved oxygen to slowly deplete and in some instances become low. In this oxygen deficient environment, organic matter breaks down without oxygen, causing putrefaction and fermentation to greatly affect the quality of the water. Thus, for water quality monitoring system, dissolved oxygen sensor is one of the most crucial sensor instruments.
- [Gauge Pressure, Absolute Pressure and Vacuum Pressure](https://www.renkeer.com/absolute-and-gauge-pressure/): In our daily lives, air itself exerts pressure, known as atmospheric pressure. Living at the Earth's surface, we have become accustomed to this pressure and often do not perceive its presence. This invisible and intangible physical quantity, however, is ubiquitous in both our daily life and industrial activities. From inflating tires to deep-sea exploration, the accuracy of pressure measurement is critical. Different applications have varying requirements regarding whether atmospheric pressure is included, which has led to the development of three industrial pressure measurement conventions: gauge pressure, absolute pressure, and vacuum pressure.
- [What is Predictive Maintenance (PdM)?](https://www.renkeer.com/what-is-predictive-maintenance/): Have you ever faced unexpected equipment failures that forced production to halt? Or struggled with high repair costs and unplanned downtime? Predictive maintenance (PdM) offers a proactive approach to safeguarding your machinery.
- [Why a 12000Hz Vibration Monitoring Sensor Better?](https://www.renkeer.com/12000hz-vibration-monitoring-sensor-better/): With the advancement of automation, vibration monitoring has become a core component of modern industrial equipment management systems.
- [How to Choose the Best Rain Gauges?](https://www.renkeer.com/how-to-choose-rain-gauges/): Rain gauges are essential instruments for accurately measuring precipitation and are widely used in meteorological monitoring, environmental research, and hydrological analysis. Based on their working principles and structural design, rain gauges can be classified into three main types: tipping bucket, optical, and piezoelectric rain gauges.
- [TDS, Conductivity and Salinity Relationship](https://www.renkeer.com/tds-conductivity-and-salinity-in-water-quality/): In various fields such as water quality monitoring, drinking water safety, and marine research, total dissolved solids (TDS), electrical conductivity (EC), and salinity are among the most commonly used water quality parameters. Although all three reflect the concentration of dissolved ions in water, they differ in meaning, calculation methods, and application scenarios. Understanding the relationship among them helps in selecting the right water quality sensors and scientifically analyzing water conditions.
- [Soil pH: Effects and Testing Methods](https://www.renkeer.com/soil-ph-effects-and-testing/): The root system of a plant can be compared to a discerning gourmet, while the soil serves as its private kitchen. Within this kitchen, soil pH plays a critical role—it determines which “nutrients” are readily available and which remain locked away. When the pH level is unbalanced, even the most fertile soil may leave plants facing either “starvation” from nutrient deficiency or “toxicity” from excessive absorption.
- [Home Water Quality Testing Without a Kit](https://www.renkeer.com/home-water-quality-testing/): Whether you have just moved into a new home or want to gain a deeper understanding of the safety and purity of your household drinking water, it is essential to know how to conduct water quality testing. Although a wide range of home water testing kits are available on the market, these products are often costly and require long shipping times, making them less suitable for everyday household monitoring. 
- [Indoor Air Quality Improving and Testing](https://www.renkeer.com/indoor-air-quality/): Did you know that most people spend about 90% of their time indoors? While we often worry about outdoor air pollution, the air inside our homes, schools, and offices can be significantly more polluted. This is the critical issue of indoor air quality (IAQ), and it has a direct impact on our comfort, productivity, and long-term health.
- [Heat Flux Definition, Types, and Measurement](https://www.renkeer.com/what-is-heat-flux/): Heat flux, also known as heat flow density, refers to the amount of heat transferred per unit area per unit time. It is a physical quantity that describes the rate and direction of heat transfer. In the International System of Units (SI), the unit is watts per square meter (W/m²). Since it has both magnitude and direction, it is considered a vector. The formula is:
- [Turbidity in Water](https://www.renkeer.com/turbidity-in-water/): Turbidity is used to measure the degree to which suspended particles in water obstruct the transmission of light. Due to the presence of various suspended substances such as silt, clay, organic matter, inorganic matter, plankton, and microorganisms, light can be scattered or absorbed, thereby affecting the water’s transparency. At present, turbidity is an important indicator for assessing whether water is polluted.
- [ORP in Water](https://www.renkeer.com/orp-in-water/): ORP is Oxidation-Reduction Potential. It is an index that measures a solution’s ability to gain or lose electrons, indicating whether the solution tends to be oxidizing or reducing.
- [Analog Signal: Definition, Difference and Applications](https://www.renkeer.com/analog-signal/): In the fields of electrical engineering and electronics, we frequently encounter various analog signals such as voltage and current. In nature, analog signals are even more abundant, including temperature, wind speed, pressure, humidity, and pH levels. But how exactly is an analog signal defined? This article will provide a detailed explanation of the definition, types, applications of the analog signal, and how it differs from the digital signal.
- [Top 3 Types of Water Quality Parameters](https://www.renkeer.com/water-quality-parameters/): Water quality parameters are indicators used to assess the condition and trends of aquatic environments. Monitoring is essential for various water sources such as drinking water, well water, and industrial wastewater. The U.S. Environmental Protection Agency (EPA) has established mandatory limits for over 90 potential contaminants found in water. These parameters are designed to protect human health and prevent waterborne diseases.
- [Wastewater Monitoring: COD, BOD, TOC, TOD](https://www.renkeer.com/what-is-cod-bod-toc-tod/): In wastewater treatment projects, it is essential to monitor water quality at every stage to ensure that the treated water meets discharge standards. Among the various monitoring parameters, COD, BOD, TOC, and TOD are the most commonly used indicators. Different types of water quality sensors are used throughout the treatment process to continuously assess various parameters. Based on the data collected by water quality analyzers, appropriate treatment methods are applied to ensure that each stage meets the required water quality standards before proceeding to the next step.
- [Natural Gas Leaks: Causes, Hazards, and Safety Measures](https://www.renkeer.com/natural-gas-leaks/): Gas leaks pose serious dangers in residential environments, including potential fire hazards, explosions, and adverse health effects. This article provides a detailed overview of the warning signs of gas leaks, self-protection measures, and common causes of natural gas leaks. Understanding these factors is critical for preventing severe accidents. It offers comprehensive guidance on how to identify and respond to gas leaks to help safeguard you and your family.
- [Free Chlorine vs Total Chlorine](https://www.renkeer.com/free-chlorine-vs-total-chlorine/): Monitoring both free chlorine and total chlorine levels is essential for evaluating disinfection performance, detecting contamination events, and maintaining regulatory compliance. For instance, regulatory bodies such as the U.S. Environmental Protection Agency (EPA) and the World Health Organization (WHO) recommend maintaining free chlorine levels between 0.2~0.5 mg/L in potable water distribution systems, with maximum residual disinfectant levels (MRDLs) not exceeding 4.0 mg/L.
- [What Causes High pH Level in Swimming Pools?](https://www.renkeer.com/high-ph-level-in-swimming-pools/): A consistently balanced pool pH is essential for ensuring water quality, user safety, and equipment longevity. The pH value indicates the acidity or alkalinity of water, measured on a scale from 0 to 14, with 7 representing a neutral state. For swimming pools, the ideal pH level typically falls between 7.2 and 7.8.
- [Difference Between Distilled Water and Purified Water](https://www.renkeer.com/distilled-water-vs-purified-water/): In daily life, industrial production, and laboratory research, the terms "distilled water" and "purified water" are often mentioned. Many people mistakenly assume they are the same. However, the two differ significantly in terms of production processes, water quality, and application scenarios. This article will provide you with a comprehensive comparison of distilled water and purified water, helping you make a scientifically informed choice based on your specific needs.
- [Soil Moisture Measurement and Calculation](https://www.renkeer.com/soil-moisture-measurement-and-calculation/): Soil moisture: Soil moisture is a vital component of the soil system, serving as a crucial medium for material transport and chemical reactions. The content and form of soil moisture significantly influence the soil’s physical and chemical properties.
- [Chlorine in Water | Effects and Measurement](https://www.renkeer.com/chlorine-in-water/): Chlorine (Cl) is a yellow-green gas with a pungent odor, known for its strong oxidizing and corrosive properties. It is widely used in water treatment, chemical manufacturing, healthcare, and disinfection. In nature and industrial applications, chlorine exists both as a gas and in the form of chloride ions (Cl⁻) or chlorine-containing compounds. Due to its excellent disinfecting and bactericidal capabilities, as well as its inherent toxicity, real-time monitoring of chlorine levels using residual chlorine sensors plays a critical role in ensuring the safety of drinking water and environmental water bodies.
- [What is Hydrology and Hydrological Monitoring](https://www.renkeer.com/hydrology-and-hydrological-monitoring/): Hydrology refers to the various phenomena of water changes and movement in nature. It studies the formation, circulation, spatial and temporal distribution, as well as the chemical and physical properties of water on Earth. Hydrology provides scientific support for preventing and mitigating floods and droughts, as well as for the rational development and utilization of water resources.
- [Different Units in Gas Detection](https://www.renkeer.com/different-units-in-gas-detection/): Have you noticed this interesting phenomenon? When using gas detectors, different gases have different concentration units. For example, the unit for hydrogen sulfide gas detector is usually ppm, while for oxygen gas detector, it is %VOL, and for methane gas detector, it is LEL. Why are there different detection units for gas detection?
- [Why and How to Measure Water pH?](https://www.renkeer.com/what-is-the-water-ph/): The water pH is an important indicator of its acidity or alkalinity. pH (Potential of Hydrogen) ranges from 0 to 14, with a value of 7 representing neutrality. When the pH is below 7, the water is acidic (the lower the value, the stronger the acidity); when it is above 7, the water is alkaline (the higher the value, the stronger the alkalinity). The World Health Organization (WHO) and the U.S. Environmental Protection Agency (EPA) recommend a drinking water pH range of 6.5 to 8.5. In nature, the ideal pH of water typically ranges from 6.0 to 9.0, while the recommended pH for agricultural irrigation water is usually between 5.5 and 7.5.
- [Wireless Sensors and Network for IoT](https://www.renkeer.com/wireless-sensors-and-network/): Wireless sensors are miniature electronic devices that integrate sensing, data processing, and wireless communication functions. They are capable of autonomously detecting physical quantities in the environment, such as temperature, humidity, light, pressure, motion, etc., and transmitting the data in real-time to central nodes or cloud platforms via wireless networks. Their core components include:
- [Environmental Monitoring Types and Systems](https://www.renkeer.com/environmental-monitoring-types-and-systems/): Since the dawn of industrial development, the emission of various toxic gases and solid waste has continuously polluted our air, soil, and water sources. This has made it essential to utilize advanced technologies such as sensors and the Internet of Things (IoT) to establish scientific environmental monitoring systems, enabling us to monitor and mitigate the environmental damage caused by industrial activities.
- [Effective Ways to Measure and Maintain Soil Moisture](https://www.renkeer.com/measure-and-maintain-soil-moisture/): Gardening is a thought-provoking and enjoyable activity. Sometimes, it's not easy to figure out exactly how much water each plant needs. This is because different plants have varying moisture requirements depending on factors like how and where they are grown, and the type of soil they are in. Ultimately, watering plants is a science, you need to keep experimenting and learning from mistakes to master it. You have to be mindful of overwatering your plants, as well as ensuring they don't lack water. Only by understanding the soil moisture in detail can you water your plants scientifically.
- [Best Temperature and Humidity Monitoring Solutions](https://www.renkeer.com/best-temperature-and-humidity-monitoring-solutions/): With a scientifically efficient temperature and humidity monitoring solution, you can not only monitor environmental data in real time but also make precise adjustments as needed to create an ideal environment. This article will introduce you to four temperature and humidity monitoring solutions and provide insights into selecting the right sensors for your specific needs.
- [Why Do Outdoor Weather Stations Measure Evaporation?](https://www.renkeer.com/what-is-evaporation/): Outdoor weather stations are essential tools for monitoring and researching meteorological changes. They provide long-term and stable monitoring of various environmental parameters, covering not only fundamental data such as temperature, humidity, and atmospheric pressure, but also dynamic information including rainfall, wind direction, and wind speed. Among these numerous meteorological parameters, evaporation is a critical observation indicator. It carries significant weight in evaluating the hydrological cycle, agricultural irrigation, and water resource management. This article will explore in depth how outdoor weather stations obtain accurate evaporation parameters.
- [Infrared Sensor Principle, Types and Circuit](https://www.renkeer.com/what-is-an-infrared-sensor/): Infrared sensor is a sensor that uses infrared rays to measure temperature, analyze gas composition or perform non-destructive testing. It is a non-contact measurement method. Infrared sensor includes optical system, detection element and conversion circuit. Optical system can be divided into transmission type and reflection type according to different structures. Detection element can be divided into thermal detection element and photoelectric detection element according to working principle.
- [Solar Radiation: What You Need to Know](https://www.renkeer.com/solar-radiation-need-to-know/): Solar radiation is the energy emitted by the sun into the surrounding space in the form of electromagnetic waves. The energy transmitted by solar radiation is solar radiation energy. The radiation received by the Earth is only one part in 2.2 billion of the total radiant energy emitted by the Sun into the universe, but it is the main source of energy for the movement of the Earth's atmosphere, as well as the main source of the Earth's light and heat energy.
- [Photosynthetically Active Radiation (PAR)](https://www.renkeer.com/photosynthetically-active-radiation/): The spectral component of solar radiation that is effective for plant photosynthesis is called photosynthetically active radiation (PAR), with a wavelength range of 400-700 nm, which basically coincides with visible light. The proportion of photosynthetically active radiation in direct solar radiation increases with the increase of the solar altitude angle, up to 45%. In diffuse radiation, the proportion of photosynthetically active radiation can reach as much as 60-70%, so cloudy days actually increase the proportion of PAR. On average, photosynthetically active radiation accounts for about 50% of the total solar radiation.
- [What You Need to Know About TVOC](https://www.renkeer.com/what-is-tvoc/): TVOC refers to Total Volatile Organic Compounds, which is one of the air quality detection standards, mainly including benzene, alkanes, aromatic hydrocarbons, alkenes, halogenated hydrocarbons, esters, aldehydes, ketones and others. Organic matter with a saturated vapor pressure exceeding 133.32pa at room temperature and a boiling point between 50℃ and 250℃ will exist in the air in the form of evaporation.
- [How is Weather Visibility Measured?](https://www.renkeer.com/how-is-weather-visibility-measured/): Visibility refers to the maximum distance at which a person with normal vision can identify a target from the background. This is actually a very subjective indicator, and different people may get different visibility. Therefore, the value of visibility is never absolute. Weather visibility depends on the current meteorological environment.
- [Top 10 IoT Sensors and Actuators](https://www.renkeer.com/iot-sensors-and-actuators/): The Internet of Things (IoT) is one of the hottest technology words in the past few years, which can collect, share, analyze and create value from data. However, without accurate data, IoT will become a useless technology. Therefore, the relationship between IoT and IoT sensors and actuators is complementary.
- [Useful Water Leak Detection Methods](https://www.renkeer.com/water-leak-detection/): Water leak detection is designed to detect and repair leaks in pipes, equipment or building structures in a timely manner to prevent property damage and high repair costs. Through monitoring, the source of leaks can be quickly identified to avoid water stains, mold growth and potential damage to building structures, ensuring a safe and healthy living or office environment.
- [Ultrasonic Sensor Work, Used, Limitations and FAQs](https://www.renkeer.com/what-is-ultrasonic-sensor/): As an advanced and well-known technology, ultrasonic sensor is widely used in various consumer and industrial fields. When adding distance measurement or detection functions to products, ultrasonic sensor is a good choice. In addition, it has wider applicability and higher reliability in hardware upgrades and software adaptations.
- [What Are Road Sensors?](https://www.renkeer.com/what-are-road-sensors/): We know that the risk of vehicle accidents on the road increases exponentially during heavy rain, fog and snowfall. According to the National Highway Traffic Safety Administration (NHTSA), the risk of a fatal accident is about 75% higher in heavy rain than in normal weather . Caltrans data shows that the risk of a fatal accident in foggy weather is more than double that of normal weather. Data from the province of Ontario, Canada, show that the risk of a crash on a snowy day is about 170 percent higher than on a sunny day. These serious data remind the traffic management to strengthen the road monitoring of extreme weather, so the road sensors become important tool to ensure traffic safety.
- [12 Types of Weather Instruments and Uses](https://www.renkeer.com/weather-instruments-types-and-uses/): Weather instruments, are specialized equipment used in weather forecasting, weather monitoring and other meteorological service areas. It can be categorized into two categories: ground weather observation instruments and high-altitude weather detection instruments.
- [Know More About Wind Speed and Direction](https://www.renkeer.com/wind-speed-and-direction/): Wind speed and direction are affected by three forces: the horizontal pressure gradient force, the geostrophic bias force and the friction force. Horizontal pressure gradient force affects the wind speed and initial direction, friction force affects the wind speed (weakening effect), and geostrophic deflection force affects the wind direction after the wind is generated.
- [What is Automatic Weather Station](https://www.renkeer.com/what-is-automatic-weather-station/): The Automated Weather Station (AWS) is an important tool for meteorologists, environmentalists and other weather enthusiasts. It provides comprehensive data on weather elements. In this blog, we'll delve into the components, price, benefits, and highlight the diverse applications of automatic weather stations.
- [Light Sensor Definition, Types and Applications](https://www.renkeer.com/what-is-a-light-sensor/): A light sensor is a device that is sensitive to light and can detect light and convert it into an electrical signal. It can measure the intensity, wavelength, frequency or direction of light.
- [Conductivity in Water](https://www.renkeer.com/conductivity-in-water/): Conductivity in water is the ability of water to conduct electricity. It is primarily related to the amount and type of electrolytes dissolved in the water, and is secondarily affected by factors such as temperature and pressure. Electrolytes are compounds that break down into free-moving ions when dissolved in water, and these ions are capable of conducting electricity. In water, electrolytes break down into positive and negative ions. Therefore, as the type and amount of electrolytes increase, the more conductive the water becomes.
- [Ozone Gas and its Sensor](https://www.renkeer.com/what-is-ozone-gas/): Ozone gas is a trace gas in the atmosphere. At room temperature and pressure, ozone is colorless at lower concentrations. At concentrations of up to 15% by volume it appears light blue and has an irritating odor. At higher concentrations, the odor of ozone is similar to that of chlorine.
- [Cold Chain Logistics and Solutions](https://www.renkeer.com/cold-chain-logistics-and-solutions/): In recent years, in addition to the growing demand for online purchases of regular products, there has been a rising consumer demand for online purchases of perishable goods such as seafood and meat. There are many foods, medicines and other commodities that need to be kept at a certain temperature when transported over long distances. This relies on cold chain logistics technology. This post will give you a detailed overview of the definition, components and solutions of cold chain logistics.
- [Cold Chain Monitoring and Solutions](https://www.renkeer.com/cold-chain-monitoring-and-solutions/): Cold chain monitoring is the real-time monitoring and control of temperature and humidity and other critical parameters during production, transportation and delivery to ensure the quality of products with stringent environmental requirements, such as food and pharmaceuticals. In order to ensure that products are always within safe temperature and humidity ranges, monitoring must be implemented at all stages of the supply chain. So the process of cold chain monitoring includes transportation, storage, distribution and packaging. Cold chain monitoring systems utilize a variety of sensors and IoT technologies to track and record the temperature of products during transportation.
- [Soil Water Types and How to Measure](https://www.renkeer.com/soil-water-types-and-measure/): Soil water is a general term for all forms of water in the soil, including water present in soil pores and adsorbed by soil particles. Soil water is the main source of water absorption for plants. It comes in three main forms: vapor, liquid and solid.
- [Differential Pressure | What, How, Why](https://www.renkeer.com/what-is-differential-pressure/): Differential pressure is the difference between the values of the pressures at different locations. For example, if the pressure at point A is P1 and the pressure at point B is P2, then the pressure difference from A to B is △P=P1-P2.
- [Meteorological Station Introduction and Types](https://www.renkeer.com/meteorological-station-introduction/): Meteorological station is a professional equipment to collect, analyze and process weather data. By collecting and analyzing temperature, humidity, air pressure, light, rainfall, dew point, wind speed, wind direction and other meteorological elements, it predicts climate change and responds to various meteorological disasters.
- [Smoke Alarm Types, Advantages and Questions](https://www.renkeer.com/smoke-alarm-types-and-questions/): Smoke from combustion is an upward motion and will quickly drift to the ceiling. The smoke alarm can detect fire through smoke. Before you see the fire or smell the smoke, the smoke detector already knows. When the alarm sounds, it beeps until the smoke clears. In a real fire it works until it is burned.
- [Weather Station Aids Prevent Forest Fire](https://www.renkeer.com/weather-station-aids-prevent-forest-fire/): In the dry season of fall and winter, dead wood and fallen leaves in forests can easily generate wildfires under lightning or human factors, which can quickly develop into forest fires if not extinguished in time. Forest fire is the most dangerous enemy of forests and the most terrible disaster of forestry, which will bring devastating consequences to forests. Forest fires not only burn down patches of forest and harm the animals in the forest, but also reduce the reproductive capacity of the forest. Fires can cause soil infertility and destroy forest water sources, and can even lead to a loss of ecological balance. Therefore, to prevent forest fires, it is necessary to install forest fire weather stations in key areas.
- [Air Quality Sensor – What You Need to Know](https://www.renkeer.com/what-is-air-quality-sensor/): An air quality sensor is a device used to detect the concentration of pollutants in the air. It can usually measure two or more air quality indicators such as temperature, humidity, carbon dioxide, carbon monoxide, ozone, formaldehyde, benzene, PM2.5, PM10, etc. It is an important part of the air purifier and fresh air system.
- [Carbon Dioxide Detectors Definition and Principle](https://www.renkeer.com/carbon-dioxide-detectors-definition-and-principle/): Carbon dioxide is a colorless, odorless gas that is widely present in the atmosphere. In the natural world, the levels of carbon dioxide are always in a dynamic equilibrium of continuous growth and consumption. Indoors, carbon dioxide tends to accumulate more easily compared to outdoor environments. Indoor carbon dioxide gas primarily originates from daily human activities. For example, each person releases approximately 1 kg of carbon dioxide per day through respiration, the average use of a computer indirectly emits 10.5 kg of carbon dioxide over a year, and processes like heating and packaging frozen food also contribute to carbon dioxide emissions. Carbon dioxide detectors can display the indoor CO2 levels and remind users to ventilate the space promptly.
- [Dew Point Definition and Measurement in Compressed Air Systems](https://www.renkeer.com/dew-point/): The dew point depends on how much water vapor is present in the air. If the air is very dry with few water molecules, the dew point is low, and surfaces must be much colder than the air for condensation to occur. If the air is very humid with a high concentration of water molecules, the dew point is high, and condensation can occur on surfaces only slightly cooler than the air.
- [What Is a Turbidity Sensor? How to Choose?](https://www.renkeer.com/what-and-how-choose-turbidity-sensor/): We need to understand what is turbidity, before learning the turbidity sensor. Turbidity is a measure of water quality that reflects the amount of suspended particles in a water sample by observing the amount of light scattered through it. The more pronounced the light scattering, the higher the turbidity of the water. Typically, the factors that affect water turbidity are the content of suspended solids and tiny particles. These tiny particles can be composed of sediment, clay, organic and inorganic materials, dissolved organic compounds, and algae. Water with high turbidity often requires purification processes before it can be used in industrial and domestic applications. This is because a decrease in turbidity often implies a reduction in harmful substances, bacteria, and viruses in the water.
- [What is Modbus Protocol and its Types?](https://www.renkeer.com/modbus-protocol-and-its-types/): Modbus is a serial communication protocol used for communication with Programmable Logic Controllers (PLCs). Because of its open protocol and simple deployment, it has become a simple protocol widely used in the industry. It is one of the RS485 communication port protocols
- [Know More About Carbon Monoxide Detector](https://www.renkeer.com/know-carbon-monoxide-detector/): Although carbon monoxide gas is toxic, it plays an important role as a combustible and clean energy source in the industrial and metallurgical sectors. It can participate in redox reactions to purify metals. Carbon monoxide gas is highly flammable and explosive. To prevent accidents, we need to use carbon monoxide detector. These detectors can continuously monitor the concentration of CO gas in the environment and emit an alarm signal when it reaches the set alarm threshold, reminding us to take preventive measures.
- [Vibration Sensor: What, Why, How and Where?](https://www.renkeer.com/what-vibration-sensor/): Vibration sensor is a device that measure the vibration speed and frequency of mechanical motion and convert them into output signals. The vibration frequency and amplitude of mechanical equipment work can reflect whether the equipment is faulty, such as: screws loose, parts aging, etc..
- [LoRa Technology: Its Difference with LoRaWAN](https://www.renkeer.com/lora-technology/): With the development of technology, the Internet of Things (IoT) has become an indispensable part. It connects a variety of devices and sensors, enabling us to manage and control our environment more intelligently. As the number of sensors and connected devices increases, a stable, reliable, and long-lasting network is needed to enable communication. Long-Range, Low-Power Wireless Network (LPWAN) technology can meet this need. Among the many LPWAN technologies, LoRa technology is the most popular.
- [Ammonia Gas – Definition, Uses, and Detection](https://www.renkeer.com/ammonia-gas/): Ammonia is the most dominant alkaline gas in the atmosphere and plays an important role in aerosol nucleation. It is also the key to causing heavy haze pollution and excessive nitrogen deposition. Ammonia is important to life on Earth and is found in almost all foods and fertilizers. Ammonia is also contained in the ingredients of many medicines. In the normal environment, ammonia exists in the form of gas. When the ammonia gas is pressurized or cooled, it forms liquid ammonia, which can be used as a refrigerant.
- [Dissolved Oxygen Definition, Important and Measurement](https://www.renkeer.com/dissolved-oxygen/): Dissolved oxygen (DO) refers to molecular oxygen dissolved in water. The unit is mg/L, which means how many milligrams oxygen in per liter of water. The oxygen levels can reflect the self-purification ability in the water. In an environment with high DO, it is beneficial to degrade various pollutants and make the water body be purified faster. Conversely, in a low DO environment, pollutants in water degrade more slowly.
- [Flood Warning System Definition and Types](https://www.renkeer.com/flood-warning-system/): Long-term rainfall and melting snow have raised water levels and flooded city roads, causing flooding. Frequent and extreme flooding is inevitable and endangers community safety. Areas that are low-lying or near rivers and lakes are more vulnerable to flooding than normal areas. To reduce hazards from flooding, a flood warning system should be in place near any major waterway. Flood warning systems can help communities and transportation prepare for this serious threat. Timely and accurate early warning can save property and lives.
- [Gas Sensors Types, Working Principles and Application](https://www.renkeer.com/gas-sensors-types-working-principles/): Biologists estimate that the human nose can distinguish on the order of ten thousand odor types, while dogs can identify hundreds of thousands to several million odor signatures and can isolate a specific odor from complex mixtures. Even so, a large number of gases in nature are colorless and odorless, including many that are toxic, asphyxiating, or explosive. These gases cannot be reliably detected by human or animal senses. For this reason, gas sensors are essential instruments for detecting gas presence and measuring gas concentration.
- [RS-485 Wiring, Communication and Difference with RS232](https://www.renkeer.com/what-is-rs485/): The commonly used communication method for data acquisition and control is RS-485. RS-485 is a general communication standard. It can not only link devices to the local network, but also put multiple 485 devices on the same bus, enabling multiple nodes to link to each other.
- [Smart Irrigation Technology and System](https://www.renkeer.com/smart-irrigation-technology-and-system/): Many countries in the world are facing the problem of water shortage. Drinking water and irrigation water are very important to us. Whether farm irrigation or garden drip irrigation requires a lot of water. This process inevitably leads to water waste. Therefore, smart irrigation systems are becoming more and more important. It consists of advanced sensors and controls to minimize wasted water.
- [LoRa Sensors Based Agriculture Remote Monitoring System](https://www.renkeer.com/lora-sensors-based-agriculture/): With the development of Internet of Things technology, sensors and wireless transmission technology are widely used in smart agriculture. Smart agriculture is based on traditional agriculture, equipped with advanced facilities and a complete monitoring system. The wireless transmission system based on Lora technology can improve agricultural production efficiency and reduce environmental pollution, thereby maximizing cost savings for agricultural producers or enterprises. In this article, we will introduce you the lora sensors commonly used in smart agriculture and the complete lora agricultural irrigation system in detail.
- [What Is PM2.5 and How Measure?](https://www.renkeer.com/what-is-pm2-5-and-how-measure/): Air is a precious natural resource. But air pollution is increasing due to industrial production and human activities. At present, air pollutants include carbon monoxide (CO), nitrogen oxides (NOx), hydrocarbons, sulfur oxides, and particulate matter (PM). Among them, the level of fine particulate matter (pm2.5) has become one of the important indicators for detecting air quality. PM2.5 are tiny particles in the air, and high pm2.5 levels can affect people's health. Therefore, dust monitoring and reducing pm2.5 levels is important for the environment and human health.
- [Top 8 Soil pH Testers for Garden Use](https://www.renkeer.com/top-8-soil-ph-testers/): A wise gardener knows how to grow up plants and flowers healthily in the garden. Because he will use tools to analyze and improve the soil to provide the best growing environment for flowers, vegetables, etc. For example: use a soil nutrient sensor to detect the content of nitrogen, phosphorus and potassium in the soil. Check the pH of the soil with a soil pH tester. Knowing the pH of your soil can give you exactly what you can and can't grow in your yard.
- [Environmental Sensors List and Used](https://www.renkeer.com/environmental-sensors-list-and-used/): The main purpose of environmental monitoring is to provide data on environmental quality and changing trends to ensure the safety of public life and property. By monitoring and analyzing various environmental indicators, we can determine the level of pollution and environmental quality. The scope of environmental monitoring involves air, temperature, humidity, soil and other types. Sensors are one of the most important tools, and environmental sensors are one of the key components commonly used in IoT designs.
- [Inclinometer & Tilt Sensor Working, Types and Applications](https://www.renkeer.com/inclinometer-working-types-and-applications/): Measuring tilt angles is an important part of geometric metrology. The range of angle measurement is wide. According to the spatial position of the plane, it can be divided into: the horizontal angle (or azimuth angle) in the horizontal plane direction, the vertical angle (or inclination angle) in the vertical direction, and the spatial angle is the horizontal angle plus the vertical angle. An inclinometer is a front-end sensor that measures the size of an object's inclination or depression relative to gravity. Here, we will discuss the different types of inclinometers, how they work, and what they are used for.
- [What is Dust Monitoring Equipment and Types](https://www.renkeer.com/dust-monitoring-equipment-and-types/): In the construction site, a large amount of dust will be generated due to the activities of construction personnel or the operation of machinery. This dust will be scattered into the air and move with the flow of air, and finally become fine particles that are easily inhaled. These particles not only pollute the air and reduce visibility, but also carry a large amount of carbon, hydrogen, sulfur, chlorine, fluorine and other heavy metals and bacterial viruses. Once inhaled by the human body, it will endanger people's health. The dust monitoring system consists of dust monitoring equipment and a remote monitoring cloud platform. It has data acquisition, data analysis and over-limit alarm functions, and can be used for 24-hour long-term outdoor monitoring.
- [Best 12 Types Portable Gas Detectors](https://www.renkeer.com/12-types-portable-gas-detectors/): Monitoring hazardous gases in the surrounding environment is fundamental to ensuring workplace safety. Many gases, such as carbon monoxide, hydrogen sulfide, etc., are difficult to detect if they are beyond the safe range without professional gas detection equipment. Because you can't see, smell or taste these gases, professionals often use portable gas detectors to ensure teams have clean air on the job. If the concentration of harmful gases in the environment exceeds the standard, the gas detector will alarm to alert your team. You can then immediately evacuate the area or use a respirator to protect yourself from exposure.
- [Temperature probes introduce, types and application](https://www.renkeer.com/temperature-probes-types-and-application/): A temperature probe is a sensor that senses temperature and converts it into a usable output signal. Temperature probes are the core part of temperature monitoring devices, which are widely used in various industries.
- [How to Measure Carbon Dioxide (CO2)?](https://www.renkeer.com/how-to-measure-carbon-dioxide/): Carbon dioxide is a gaseous compound produced by the reaction of carbon and oxygen. Its chemical formula is CO2. A carbon dioxide molecule consists of two oxygen atoms and one carbon atom. Carbon dioxide is an inorganic substance that is not flammable and generally does not support combustion. It is non-toxic at low concentrations, but when the concentration of carbon dioxide in the environment exceeds a certain amount, carbon dioxide will have an impact on the human body. This article explains in detail how to measure carbon dioxide?
- [Best Temperature and Humidity Data Loggers Introduce, Types and Select](https://www.renkeer.com/temperature-and-humidity-data-loggers-introduce-types-and-select/): Temperature and humidity data loggers are widely used in various industries across the country, such as agricultural research, food safety, pharmaceutical storage, chemical industry, environmental protection and other industries. The temperature and humidity data logger, also called the temperature and humidity recorder, is mainly used for the monitoring and recording of the temperature and humidity during the storage and transportation of food, medicine, and fresh items. With the increasing level of modern technology, temperature and humidity data logger are becoming more and more important in our lives.
- [Poultry Breeding Environmental Monitoring Solution](https://www.renkeer.com/poultry-breeding-environmental-monitoring-solution/): Let's take a chicken house as an example to explain the composition and application of poultry environmental monitoring in detail:
- [What does a Rain Gauge Measure and How it Use?](https://www.renkeer.com/rain-gauge-measure-and-use/): Accurately measuring rainfall has long been a challenge, owing to its pronounced regional and diurnal variability. The emergence of modern Western scientific methods spurred systematic efforts to develop automated, quantitative rain gauges. Among the early pioneers was Benjamin Franklin, whose work contributed to a growing body of research that produced a diverse range of gauge designs, varying in form and operating principle across different countries and eras.
- [Soil Moisture Sensor FAQ](https://www.renkeer.com/soil-moisture-sensor-faq/): Soil moisture is the source of the survival of plants. Soil moisture refers to the moisture content of the soil. The moisture content of the soil directly affects the growth quality and speed of crops. In the planting industry, crops cannot directly obtain the inorganic elements in the soil by themselves. The water in the soil acts as a solvent to dissolve these inorganic elements. The crops absorb soil water through the root system to obtain nutrients and promote growth. Therefore, precipitation or irrigation must be converted into soil. Water can be absorbed by plants. During the process of growing and completing the development of crops, because of the different varieties, the requirements for soil temperature, water content and salinity are also different. There are many ways to monitor soil moisture, and the most commonly used method is to measure it through a soil moisture sensor.
- [Karst Cave Monitoring System](https://www.renkeer.com/karst-cave-monitoring-system/): What is a karst cave? The karst cave is a treasure given to mankind by nature and is called a "disposable non-renewable resource" by experts. It is the result of the long-term dissolution of groundwater in limestone areas under specific temperatures, humidity, and moisture conservation. The main component of limestone is calcium carbonate, which reacts with water and carbon dioxide to turn into calcium bicarbonate. Calcium bicarbonate is an inorganic acid salt that is easily soluble in water. In nature, underground water with carbon dioxide and rainwater with carbon dioxide have gradually formed karst caves due to the long-term erosion of limestone layers. To protect it from damage, a cave monitoring system can be installed.
- [Top 16 Weather Sensors For The Weather Station](https://www.renkeer.com/top-16-weather-sensors/): The weather sensors are the sensing end of the weather station and collect various weather-related data. The weather station can obtain the main parameters and information of the climate, all relying on the measurement of the sensor. These seemingly small parts are the basis for the normal operation of the weather station. They are like the front soldiers and stormtroopers of climate monitoring, escorting the weather monitoring work.
- [Best WiFi Thermometer For Temperature And Humidity Monitoring](https://www.renkeer.com/wifi-thermometer-for-temperature-and-humidity-monitoring/): Temperature and humidity monitoring are the two most important elements of indoor environmental monitoring. A suitable temperature and humidity environment can not only make your body and mind happy, but also can effectively avoid some potential risks and ensure the safety of your property. The remote WIFI thermometer and hygrometer can provide you with alarm information before the temperature and humidity reach destructive levels, so that preventive measures can be taken in time. This will undoubtedly save you a lot of debt.
- [pH Sensor Types and pH Electrode Choose](https://www.renkeer.com/ph-sensor-types/): Everyone knows that the choice of water quality sensors is very important. In water measurement, the ph sensor is one of the important tools. However, there are many kinds of ph sensors on the market, which makes many consumers wonder “how do I choose the right ph sensor?”, “Where do I start?”. This requires us to know the ph sensor information before using or buying, and then choose the appropriate sensor. In this article, we will introduce you to the types of pH sensors and how to choose a pH electrode.
- [Types Of Smart Building Sensors With IoT Technology](https://www.renkeer.com/smart-building-sensors-types/): Smart buildings are the product of the development of modern science. The smart building system is mainly composed of Internet of Things technology, modern computer technology, and smart building sensors. Smart building refers to the optimal combination of the structure, system, service and management of the building according to the needs of users, so as to provide users with an efficient and comfortable humanized building environment.
- [Knowing Soil NPK : Your Plants, Grow Better](https://www.renkeer.com/knowing-soil-npk-for-plants-grow-better/): In soil npk, N stands for nitrogen. It is the most abundant element in the air, and most of the nitrogen exists in the air in elemental form. However, nitrogen in the air cannot be directly absorbed by plants. We need to add organic matter to the soil so that nitrogen can penetrate into the soil and be absorbed by plants. Nitrogen is a component of chlorophyll and is closely related to photosynthesis. It is responsible for the growth of plant leaves. When the plant lacks nitrogen, the growth of the plant slows down, the rhizome is short, the leaves are yellow and small. The long-term lack of nitrogen can also cause the leaves to fall off early. When growing green plants and vegetables, it is usually necessary to regularly supplement nitrogen.
- [Flood Monitoring System With IoT Sensors](https://www.renkeer.com/flood-monitoring-system-with-iot-sensors/): Natural disasters such as floods and heavy rains pose threats to lives and property around the world. Without a proper flood monitoring system, these natural events often lead to disasters, severely affecting economic losses, social chaos, and urban environmental damage. Although IoT solutions cannot prevent flooding, real-time monitoring of data can help minimize potential damage by building proactive solutions for the community. With the help of the Internet of Things flood monitoring system, we can obtain real-time information on rainfall, how deep the water level may be, and changing conditions.
- [Types of Industrial Sensors For Automation](https://www.renkeer.com/types-of-industrial-sensors-for-automation/): The key to the smart industry lies in the collection of data and information. Sensors are the nerve endings of the smart industry. They are used to collect data and provide basic data support for the construction of the smart industry. At the same time, with the rapid development of the Internet of Things, Industry 4.0, and intelligent manufacturing, application requirements are getting higher and higher. Smart sensors that collect the most initial data are rapidly upgrading and iterating, driving the intelligent transformation of industrial Internet terminals. “Industrial Sensor 4.0” or the era of industrial sensors is booming. It ranges from industrial process sensing and factory automation, from microcontrollers and wired or wireless connections to cloud servers.

## Product categories
- [Products](https://www.renkeer.com/product-category/products/)

## About Renkeer

> Shandong Renke Control Technology Co., Ltd. is a leading environmental monitoring high technology enterprise in China, founded in 2012. Renke is engaged in industrial sensor, communication gateway, industrial data platform, cloud computing service, and measurement control technology solution. Renke is a professional manufacturer specializing in the R&D, production, and sales of intelligent environmental monitoring terminals and control systems. Our product portfolio covers a wide range of environmental monitoring instruments, including temperature and humidity sensors and data loggers, water quality sensors, gas monitoring sensors, industrial monitoring sensors, soil sensors, and meteorological sensors. Since launching our free cloud platform service in 2015, Renke has connected over one million active devices worldwide. Our solutions have been exported to more than 100 countries and regions, including the United States, United Kingdom, Germany, the Netherlands, Spain, Australia, South Africa, India, Russia, Southeast Asia, South America, and the Middle East.

## Resources

- [Renkeer Product Catalog (PDF)](https://www.renkeer.com/wp-content/uploads/2023/04/Renke-catalog.pdf): Full product catalog covering all sensor categories.