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MQ-135 (MQ135) Air Quality Sensor Module
The MQ135 Air Quality Sensor Module a low cost semiconductor sensor which can detect the presence of Ammonia (NH3), Mono-nitrogen oxides (NOx), Alcohol, Benzene, Smoke, Carbon-dioxide (CO 2) etc. It has good sensitivity to harmful gases in a wide range. The sensitive material used for this sensor is SnO2, whose conductivity is lower in clean air. It’s conductivity increases as the concentration of sensing gases increases. This module provides both digital and analog outputs. MQ135 Air Quality Sensor module can be easily interfaced with Micro controllers, Arduino Boards, Raspberry Pi etc.
● High Sensitivity.
● High sensitivity to Ammonia, Sulfide and Benze.
● Stable and Long Life.
● Detection Range: 10 - 300 ppm NH3, 10 - 1000 ppm Benzene, 10 - 300 Alcohol.
● Heater Voltage: 5.0V.
● Dimensions: 18mm Diameter, 17mm High excluding pins, Pins - 6mm High.
● Long life and low cost