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Mikroe Ammonia Click

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Mikroe Ammonia Click is based on the MQ-137 gas sensor with a sensitive layer made of SnO2, which changes its resistance when exposed to ammonia. The sensor can sense NH3 concentration in the range of 5ppm to 200ppm. The board is equipped with a trimmer potentiometer. It adjusts the sensitivity and offset of the MQ-137 sensor, making it ideal for the detection of ammonia.

  • On-board modules: Hanwei Electronics MQ-137 high accuracy ammonia sensor
  • 5ppm to 200ppm range of NH3 concentration sensing
  • Integrated PWM-controlled heating element
  • Protected against particles and mechanical damage
  • GPIO, SPI, Analog interface
  • mikroBUS compatibility
  • L (57.15mm x 25.4mm) click board size
  • 3.3V or 5V input voltage



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