The ZW-SO2 RS485 SO2 Gas Transmitter supports a wide voltage supply of 10-30VDC and has a power consumption of only 0.18W. It enables accurate measurement of SO₂, temperature, and humidity, with a default SO₂ range of 0-20.00ppm and a resolution of up to 0.1ppm. Featuring dual RS485/analog outputs, it operates stably at -20~50℃, resists condensation, and is ideal for SO₂ concentration monitoring in various industrial and environmental protection scenarios.

ZONEWU the methane transmitter designed by our company has strong safety, fast response speed, and strong anti-interference ability. After our company's unique compensation algorithm and multi-stage standard gas calibration, it also has the characteristics of long life, high precision, high repeatability, and high stability. Suitable for real-time monitoring of methane concentration in underground pipe galleries, underground parking lots, public toilets, garages, workshops, chemical plants, greenhouse farms, and other places. The device adopts a wide voltage 10-30V DC power supply, 485 signal output, standard ModBus RTU communication protocol, ModBus address can be set, baud rate can be changed, and the communication distance is up to 2000 meters.

This RS485 Hydrogen Sulfide Transmitter is an industrial-grade gas detection device based on electrochemical sensing technology. It accurately measures hydrogen sulfide concentrations in the range of 0~50 ppm, while simultaneously monitoring temperature (-40~+80℃) and humidity (0~99.9% RH). Equipped with an RS485 interface and ModBusRTU protocol, it supports a wide voltage supply of 5~28VDC, weighs only 0.6kg, and operates stably in environments ranging from -20~60℃, making it ideal for industrial hydrogen sulfide monitoring scenarios.

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.

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.

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.

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.

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.