MQ-135 Air Quality Gas Sensor Module

Overview

The MQ-135 air quality gas sensor module is widely used in air quality control equipments for buildings/offices, are suitable for detecting of NH3,NOx, alcohol, Benzene, smoke,CO2 ,etc

Features

The MQ-135 has the following features

1. Dual signal output (analog output, and TTL level output);
2. Analog output voltage increases with increasing gas concentration.
3. TTL output goes low when a valid signal is found. Low signal light turns on.
4. Has a long life and reliable stability.
5. Rapid response recovery characteristics
6. Wide detecting scope
7. Fast response and High sensitivity
8. Simple drive circuit

Specifications

• Main chips: LM393, MQ-135 gas sensing probe
• Operating voltage: DC 5V

Additional information