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High Precision Gas Sensors,Smart Sensor System Supplier


Ensure workplace safety and environmental compliance with ZoneWu's advanced wireless gas sensors. Detect and measure critical gases—including carbon monoxide (CO), methane (CH₄), ammonia (NH₃), hydrogen chloride (HCl), hydrogen sulfide (H₂S), ozone (O₃), and other hazardous substances—in real-time with ultra-high sensitivity. Our reliable, stable sensors feature strong anti-interference capabilities, delivering accurate data you can trust for proactive safety measures and operational insights. Get the right gas monitoring solution for your needs. Explore ZoneWu Gas Sensors or Contact Us for a Free Quote.

  • RS485 CL2 temperature humidity sensor; Industrial environment monitoring probe; 485 bus temperature humidity transmitter; High-precision temperature humidity sensor
    ZONEWU RS485 CL2 Temperature and Humidity Sensor – Industrial-Grade Environmental Monitoring Transducer
    The RS485 chlorine gas transmitter designed by our company has the characteristics of fast response, high sensitivity, and strong anti-interference ability. Equipped with high-performance chlorine gas sensors and microprocessors, it has the characteristics of high detection accuracy, stable performance, and low power consumption. Suitable for chlorine gas concentration monitoring in industrial safety, environmental monitoring, industrial production and other places. This device adopts a wide voltage 50-28V DC power supply, 485 signal output, standard ModBus RTU communication protocol, can set ModBus address, can change baud rate, and has a communication distance of up to 2000 meters.


    Model No.:LW311-Cl2(RS485)

    Use:Detect the content of gas Cl2
    Power Supply Mode: 5~28VDC
    LoRaWAN Mode: OTAA Class A/C
    Certificates: CE,ROHS,FCC,ISO and 11 patents certifications
    Customized support: OEM, ODM
    Warranty: 1 Year
  • ZONEWU Ammonia(NH3) Monitoring Transmitter
    Industrial RS485 Electrochemical Ammonia Gas Transmitter
    This RS485-type ammonia temperature and humidity transmitter adopts the electrochemical principle, supports 5-28VDC wide voltage power supply, and features a wall-mounted waterproof design suitable for harsh environments. It has the characteristics of fast response, high sensitivity, and strong anti-interference. Calibrated with exclusive algorithms and standard gases, it has high precision and strong stability, with data updated every 2 seconds. It can real-time monitor ammonia (0-50/100ppm), temperature (-40~80℃), and humidity (0~99.9% RH), and is suitable for scenarios such as farms, chemical plants, and greenhouses. It supports the ModBus RTU protocol and is easy to install and use.
    Model No.: LW300-NH3(RS485)
    Use: ammonia monitoring

    Power Supply: 5~28VDC

    Certificates: CE,ROHS
    Customized support: OEM, ODM
    Warranty: 1 Year
  • ZONEWU Hydrogen(H2) Monitoring Transmitter
    Industrial-grade RS485 Hydrogen(H2) Gas Transmitter
    Our RS485 hydrogen transmitter integrates high-sensitivity gas detection with stable Modbus RTU communication. It supports remote monitoring and PLC system integration, features explosion-proof design and temperature compensation, and delivers accurate H₂ concentration data for industrial sites, battery rooms, and fuel cell systems. Reliable, easy to calibrate, ideal for safety-critical applications.
    Model No.: LW308D-H2(RS485)
    Use: hydrogen monitoring

    Power Supply: 10~30VDC

    Certificates: CE,ROHS
    Customized support: OEM, ODM
    Warranty: 1 Year
  • ZONEWU Hydrogen(H2) Monitoring Sensor
    Industrial-grade LoRaWAN Wireless Hydrogen(H2) Gas Sensor
    This LoRaWAN Hydrogen Sensor is a professional wireless IoT gas monitoring device based on electrochemical principle, designed for global industrial applications. With a measurement range of 0-1000 ppm and 1 ppm high resolution, it delivers accurate H₂ concentration detection. Supporting 8 global frequency bands (CN470/EU868/US915 etc.) and LoRaWAN 1.0.3 protocol, it’s compatible with OTAA Class A/C modes (default Class C) for reliable long-range transmission. Features low power consumption, strong anti-interference, and high stability, it allows flexible configuration of alarm thresholds, data collection & reporting cycles via downlink commands. Ideal for industrial safety, energy storage security, and environmental monitoring worldwide, it’s easy to install, supports zero-point calibration, and comes with a 1-year warranty, providing a trusted IoT solution for global hydrogen safety monitoring.
    Model No.: LW308D-H2
    Use: hydrogen monitoring

    Power Supply: 5~28VDC

    LoRaWAN Mode: OTAA  Class A/C(Default: Class C)

    Certificates: CE,ROHS
    Customized support: OEM, ODM
    Warranty: 1 Year
  • CO₂ Sensor, Gas Detection, Environmental Monitoring
    High-Sensitivity RS485 CO₂ Gas Concentration Monitoring Sensor
    This is a high-precision CO₂ gas concentration sensor, suitable for scenarios such as indoor environmental monitoring, fresh air systems, and agricultural greenhouses. It can detect the CO₂ concentration in the air in real time and output accurate data, featuring fast response speed, strong stability, and excellent anti-interference ability. It supports multiple signal output methods, facilitating integration with various devices and helping users keep track of the environmental gas quality.
    Model No.: LW303D-CO2(RS485)
    Use: Carbon Dioxide monitoring
    Power Supply: 10~30VDC
    Measuring Accuracy: ±0.5℃
    Certificates: CE,ROHS
    Customized support: OEM, ODM
    Warranty: 1 Year



  • ZONEWU Oxygen Gas Detector
    Professional RS485 Long-Distance Oxygen(O2) Gas Sensor
    Our RS485-type O2 temperature and humidity sensor boasts rapid response, high sensitivity, and strong anti-interference. Calibrated via multi-stage standard gas and unique compensation algorithms, it offers long service life (≥24 months), high precision (O2: ±2%FS, temp: ±0.5℃, humidity: ±3%RH) and stability. With 10-30V DC wide voltage supply, it adopts ModBus RTU protocol, supporting address/baud rate setting and 2000m long-distance communication. Featuring a waterproof wall-mounted design, it suits harsh environments like warehouses, workshops, chemical plants, and greenhouses. Optional OLED screen enables on-site reading. Ideal for real-time gas and environmental monitoring, it’s your reliable choice for diverse industrial and commercial needs.
    Model No.:LW305-O2(RS485)
    Use:Oxygen monitoring
    Power Supply:10~30VDC
    Measuring Accuracy:±2%FS
    Shell Material:ABS
    Certificates:CE,ROHS
    Customized Support:OEM, ODM
    Warranty:1 Year

  • ZONEWU Phosphine Gas Detector
    High-precision RS485 Phosphine(PH3) Gas Sensor
    This RS485-type phosphine (PH3) sensor adopts the electrochemical principle and supports the ModBusRTU protocol. With a measuring range of 0-1000ppm and a resolution of 0.1ppm, it boasts high detection accuracy and stable performance. Powered by 5-28VDC wide voltage, it features a wall-mounted waterproof design suitable for harsh environments and can proactively report data anomalies. It is widely used in phosphine monitoring scenarios such as industrial safety, agricultural production and environmental protection.
    Model No.: LW318D-PH3(RS485)
    Use: phosphine monitoring

    Power Supply: 5~28VDC

    Measuring Range: 0~1000 ppm

    Certificates: CE,ROHS
    Customized support: OEM, ODM
    Warranty: 1 Year
  • ZONEWU LoRaWAN Portable Gas Chlorine(Cl2) Sensor
    ZONEWU Wireless LoRaWAN Gas Chlorine(Cl2) Sensor
    LoRa wireless chlorine gas (CL2) sensor is a wireless IoT sensor used for monitoring chlorine gas. Based on LoRa spread spectrum modulation technology, ultra long distance communication between terminals has been achieved. Equipped with high-performance chlorine gas sensors and microprocessors, it has the characteristics of high detection accuracy, stable performance, and low power consumption. It can preset upper and lower threshold values based on the environment and actively report data anomalies. Widely used in industrial safety, industrial parks, environmental protection and other scenarios.


    Model No.:LW311-Cl2

    Use:Detect the content of gas Cl2
    Power Supply Mode: 5~28VDC
    LoRaWAN Mode: OTAA Class A/C (Default: Class C)
    Certificates: CE,ROHS,FCC,ISO and 11 patents certifications
    Customized support: OEM, ODM
    Warranty: 1 Year
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