MQ-135 air quality sensor on 5V detects CO2 ammonia NH3 smoke benzene

This air quality sensor module is an advanced tool for monitoring the presence of pollutants such as benzene, ammonia (NH3) and carbon dioxide (CO2) in the atmosphere. Equipped with a potentiometer, it allows the adjustment of the threshold at which the output signal changes from high to low, which, when the set standard is exceeded, can activate an audible alarm (buzzer) or activate an indicator light. Thanks to this functionality, the sensor is an ideal component for creating a home air quality monitoring station to keep track of pollution levels and take care of the health of residents. Specification:

* supply voltage 5V

* detects: alcohols, ammonia, benzene, smoke

* operating temperature: -10 °C to 45°C

* digital and analogue output

* dimensions 30 mm x 20 mm