ZHENGZHOU WINSEN ELECTRONICS TECHNOLOGY CO., LTD.

This module uses non-dispersive infrared (NDIR) principle to detect the existence of refrigerant in fast response, with excellent selectivity and non-oxygen dependent. It’s a high performance module with temperature

This module integrates multiple sensors of Electrochemical HCHO, Semiconductor VOC, Laser particles, NDIR CO2, and Temperature & Humidity, providing UART(TTL) output. The compact design saves developing time, great choice for air quality detector, air purifier, air conditioner and HVAC system.

MQ-4 is a semiconductor(MOS) type gas sensor with high sensitivity to methane in wide range and also has anti-interference to alcohol and other gases. It has advantages of quick response, 10 years lifespan, low cost and simple drive circuit for the use of gas leakage alarm and portable gas detector.