Gas Detection Ammonia NH3 Sensor Module (Fermion DFRobot)

Out Of Stock



The Fermion: MEMS Ammonia NH3 Gas Detection Sensor utilizes cutting-edge micro-electromechanical system (MEMS) technology, delivering a sensor with compact dimensions (13x13x2.5mm), low power consumption (<20mA), minimal heat generation, short preheating time, and swift response recovery. This sensor is designed for qualitative measurements of ammonia concentration, making it suitable for applications such as ammonia leakage detection in cold storage, aquaculture risk control, and toilet odor monitoring.

Wiring Diagram of Fermion: MEMS NH3 Sensor and Arduino UNO

Figure: Wiring Diagram of Fermion: MEMS NH3 Sensor and Arduino UNO


Precautions for Use:

  • Remove the protective film before usage.
  • Avoid exposure to volatile silicon compounds vapors.
  • Stay clear of high concentrations of corrosive gases.
  • Prevent contamination from alkalis, alkali metal salts, and halogens.
  • Refrain from prolonged exposure to extreme environments.
  • Avoid contact with water, condensation, and freezing.
  • Minimize excessive vibration, impact, and dropping.
  • Do not use in systems involving personal safety concerns.
  • For extended non-usage periods, preheat the module for at least 24 hours.



  • Compact size: 13x13x2.5mm
  • Low power consumption: <20mA
  • High sensitivity and rapid response recovery
  • Advanced MEMS technology



  • Ammonia leakage in cold storage
  • Aquaculture risk control
  • Toilet odor monitoring



  • Gas detected: Ammonia (NH3)
  • Detection range: 1-300ppm
  • Operating voltage: 3.3-5V
  • Operating current: <20mA
  • Output signal: Analog voltage
  • Sensitivity: R0(in air)/Rs(in 50ppm NH3) ≥ 3
  • Operating temperature: -10-50℃
  • Operating humidity: 15-90%RH (non-condensing)
  • Lifespan: ≥5 years (in air)
  • Dimension: 13×13 x 2.5mm / 0.51×0.51x0.1"






Shipping List:

  • Fermion: MEMS NH3 Sensor (breakout) × 1
  • 2.54mm pitch header pin × 1