SIPRO MQ135 MQ-135 Air Quality Sensor Hazardous Gas Detection Module for Boards Compatible with Arduino AVR | Internet of Things Project IOT Science Project (Pack of 1)

MQ-135 Gas Sensor Module For NH3, Alcohol, benzene, smoke , CO2 Detector Module

The MQ-135 gas sensor module is a device that is used for sensing a range of gases, including ammonia (NH3), sulfur dioxide (SO2), and carbon monoxide (CO). It is based on a metal oxide semiconductor (MOS) gas sensor, which uses a semiconductor material to detect gases.