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The MQ135 air quality detection module has TTL output valid signal is low level, (output low signal light, which can be accessed microcontroller IO port).*The MQ135 gas detection module uses tin oxide as a the gas sensitive material.*This gas detector sensor module is suitable the detection of harmful gases such as ammonia, aromatics, sulfides, benzene vapor, smoke and other harmful gases.
This gas detector sensor module is suitable the detection of harmful gases such as ammonia, aromatics, sulfides, benzene vapor, smoke and other harmful gases. When contaminated gas is present in the environment where the MQ135 gas sensor is located, the conductivity of the sensor increases as the concentration of contaminated gas in the air increases.
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