Overview

The gas sensing material used in the MQ135 gas sensor is tin dioxide (SnO2), which has low conductivity in clean air. When there is polluted gas in the environment where the sensor is located, the conductivity of the sensor increases with the increase of the concentration of polluted gas in the air. The MQ135 gas sensor has a high sensitivity to ammonia, sulfide, and benzene-based vapors, and is ideal for monitoring smoke and other harmful gases. This sensor can detect a variety of harmful gases and is a low-cost sensor suitable for a variety of applications.

Features

Sensitive for benzene, alcohol, smoke
Output voltage boosts along with the concentration of the measured gases increases
Fast response and recovery
Adjustable sensitivity
Signal output indicator

Specifications

Power: 2.5V ~ 5.0V
Dimension: 40.0mm * 21.0mm
Mounting holes size: 2.0mm
Sensitive gases: ammonia, nitrogen oxides, alcohols, aromatic compounds, sulfides, fumes