Specifications of MQ135 Gas Sensor Module:-
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)
MQ 135 Gas Sensor module for Air Quality having Digital as well as Analog output. Sensitive material of MQ135 gas sensor is SnO2, which with lower conductivity in clean air. When the target combustible gas exist, The sensors conductivity is more higher along with the gas concentration rising. MQ135 gas sensor has high sensitivity to Ammonia, Sulphide and Benze steam, also sensitive to smoke and other harmful gases. It is with low cost and suitable for different application.