MQ-135 Gas Module Air Quality Sensor (NH3,NOx, alcohol, Benzene, Smoke,CO2 ,etc.) for Arduino

Size: 32mm X22mm X30mm
The main chip: LM393, MQ135 gas sensing probe
Operating voltage: DC 5V

Has a signal output LED indicates
Dual signal output (analog output, and TTL level output)
TTL output valid signal is low; (lights lit when the output is low, which can be accessed microcontroller IO port)
Analog output increases with the concentration, the higher the concentration the higher the voltage
Sulfide, benzene vapors, fumes and other harmful gases with high sensitivity
Having a long life and reliable stability
Quick response and resume
With mounting holes for easy fixed installation
The probe can plug design for easy test
Gas sensors tested concentration range: 10 to 1000ppm


For detecting harmful gases home environment, suitable for the detection of ammonia, aromatic compounds, sulfur compounds, benzene vapor, smoke and other harmful gases gases

Package Included

1 X MQ-135 Gas Module

keywords:MQ-135 gas module