**MQ-135 GAS SENSOR**\\

This sensor gives an indication of the air quality by sensing gasses like NH3,NOx, alcohol, Benzene, smoke,CO2, etc. It has an analog output and a digital one. The last one gives a signal when a certain level that can be selected by a potentiometer is exceeded.\\

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{{ ::mq-135-gas-sensor-usermanual.pdf | User manual}}\\
{{ ::mq-135-gas-sensor-schematic.pdf | Schematic}}\\
{{ ::mq135.pdf | Technical data}}