Introduction

The material of MQ135 is Sn­O₂, it is a special material: when exposed to the clean air, it is hardly to conduct, however, when put it in a environment with combustible gas, it has a pretty performance of conductivity. Just make a simple electronic circuit, convert the change of the conductivity to a correspond output single. MQ135 gas sensor is sensitive to Ammonia, Sulfide, Benzene steam, smoke and other harmful gases. Used for family, Surrounding environment noxious gas detection device, Apply to ammonia, aromatics, sulfur, benzene vapor, and other harmful gases/smoke, gas detection, tested concentration range: 10 to 1000ppm

Features

Working voltage: DC 5V

Working Current: 150mA

DOUT: TTL output

AOUT: Analog output

Preheat time: Over 20s

Dimension: 32mm x 22m x 27mm(HIGH 27mm)

low cost

Suitable to any application 

Resource