MQ-135 module air quality
MQ-135 module air quality harmful gas detection sensor alarm module
The gas-sensitive material used in the MQ135 gas sensor is tin dioxide (SnO2) with low conductivity in clean air. When the sensor is stored in the environment
when the polluted gas the conductivity sensor increases as the concentration of pollutant gases in the air increases. Using a simple circuit to change the conductivity
of the output signal is converted to the corresponding gas concentration.
The MQ135 sensor is highly sensitive to ammonia sulfides and benzene vapors and is ideal for monitoring smoke and other harmful conditions. Such a sensor may be the subject
detected a variety of harmful gases it is a low-cost sensors for a variety of applications.