MQ135 Air Quality Sensor Module - ADIY

ADIY MQ135 Air Quality Sensor Module is made using Air Quality Gas Sensor MQ135. It is a low-cost semiconductor sensor and has high sensitivity to ammonia gas, sulphide, benzene series steam, also can monitor smoke and other toxic gases well. It is a Metal Oxide Semiconductor (MOS) type Gas Sensor also known as Chemiresistors as the detection is based upon change of resistance of the sensing material when the Gas comes in contact with the material. Using a simple voltage divider network, concentrations of gas can be detected. This module provides both digital and analog outputs. It can be easily interfaced with Microcontrollers, Arduino Boards, Raspberry Pi etc.