Gravity: NH3 Sensor (Calibrated) - I2C & UART

SKU:SEN0469 Brand:DFRobot Reward Points: 1369
In Stock
Topic: Arduino Gravity
Quantity Based Price
  • 3-4$133.00
  • 5-9$130.00
  • 10+$126.00
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Expected Restock Date: [[restockDate]]


This 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. 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. The sensor has 32 modifiable I2C addresses, an integrated temperature compensation algorithm, and a threshold alarm function, It has good compatibility with mainstream main control devices such as Arduino, ESP32, and Raspberry Pi. The easy-to-use Gravity interface, coupled with our sample code, can quickly build an ammonia concentration detector.

DFRobot has introduced 12 gas detection sensors in this series, CO, O2, NH3, H2S, NO2, HCL, H2, PH3, SO2, O3, CL2, HF, which are used in exactly the same way and data format, so you can combine them according to your needs.

Gravity: NH3 Sensor (Calibrated) - I2C & UART


  • Strong anti-interference ability
  • High stability
  • High sensitivity
  • Applications

  • Industrial ammonia detection
  • Environmental protection device
  • Specification

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

    Project: Accurate soil health assessment using calibrated ammonia gas sensors

    Introduction: In this project, we will test the performance of the Ammonia Sensor NH3 Sensor (Calibrated) for the determination of soil fertility using a simple configuration.


    Shipping List

  • Gravity: NH3 Signal Conversion Board x1
  • NH3 sensor probe x1
  • Gravity - 4pin Cable x1




    Gravity: NH3 Sensor (Calibrated) - I2C & UART

    In Stock
    • 3-4$133.00
    • 5-9$130.00
    • 10+$126.00