Gas sensor MQ-139 (Freon)

Gas sensor MQ-139 (Freon)

Product information:

The MQ-139 gas sensor breakout is a compact sensor module for detecting volatile organic compounds (VOCs) and solvent gases (Freon). Suitable for applications such as air quality measurements, gas detection, and experimental measurement setups.

Thanks to the breakout board, the sensor can be easily connected to a microcontroller such as an Arduino or Raspberry Pi. The module provides a practical basis for prototyping, education, and IoT projects.

With an analog output and a digital output via an LM393 comparator.
You can read the analog output of the MQ-135 with an Arduino via analogRead.
The digital output provides a low or high signal depending on the threshold value set with the potentiometer.

Caution! Our MQ gas sensors are ideal for hobby projects and experiments, but they must not be used to ensure life safety. Use them responsibly and always take the proper safety measures in critical situations. Safety comes first!