Gravity NH3 Sensor (Calibrated) - I2C & UART

DFRobotSKU: RB-Dfr-1176
Manufacturer #: SEN0469

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Sale price ¥23,530

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  • Gravity NH3 Sensor (Calibrated) - I2C & UART
  • Detects ammonia concentration
  • Offers high stability and high sensitivity
  • Strong anti-interference ability
  • Adopts the electrochemical principle
  • Supports three output modes: analog, I2C, and UART

The Gravity NH3 Sensor (Calibrated) - I2C & UART is a sensor that detects ammonia concentration and supports three output modes: analog, I2C, and UART. The probe has been calibrated at the factory, which can quickly and accurately measure the concentration of ammonia in the environment. It can be widely used in the detection of ammonia in industrial and environmental protection fields.

The probe adopts the electrochemical principle, has the characteristics of strong anti-interference ability, high stability, high sensitivity, etc., and the service life is as long as two years.

  • 1x Gravity: NH3 Signal Conversion Board
  • 1x NH3 Sensor Probe
  • 1x Gravity - 4-Pin Cable


  • Adapter plate size: 37 x 32 mm
  • Detection Gas: Ammonia (NH3)
  • Detection range: 0 ~ 100 ppm
  • Working Voltage: 3.3 ~ 5.5 V DC
  • Working Current: <5 mA
  • Output Signal: I2C, UART (0 ~ 3 V), analog voltage
  • Working Temperature: -20 ~ 50 °C
  • Working Humidity: 15 ~ 90 % RH (non-condensing)
  • Storage Temperature: -20 ~ 50 °C
  • Storage Humidity: 15 ~ 90 % RH (non-condensing)
  • Lifespan: >2 years (in the air)
  • Compatibility: Arduino, ESP32, Raspberry Pi

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