MQ 135

This is a MQ 135 Air Quality/Gas Detector Sensor Module For Arduino.

If you are want to make a device that is used to detect Ammonia, Sulphide, and Benzene steam, also sensitive to smoke and other harmful gasses from the desired distance, then this sensor is needed for you.y0u can buy this sensor from Robu.in at a reasonable price.

The MQ 135 Air Quality Detector Sensor Module For Arduino has lower conductivity in clean air. When the target combustible gas exists, the conductivity of the sensor is higher along with the gas concentration rising.

Convert the change of conductivity to the corresponding output signal of gas concentration. The MQ135 gas sensor has a high sensitivity to Ammonia, Sulphide, and Benzene steam, also sensitive to smoke and other harmful gases.