DFRobot Gravity: H2S Sensor (Calibrated) – I2C & UART


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SKU: 1283760
  1. Detection Gas: Hydrogen sulfide (H2S)
  2. Detection range: 0~100ppm
  3. Working Voltage: 3.3~5.5V DC
  4. Working Current: <5mA


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Brand: DF Robot
Category: Other Sensors

This is a sensor that detects hydrogen sulfide 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 hydrogen sulfide in the environment. Can be widely used in the detection of hydrogen sulfide in industrial, underground, 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 a hydrogen sulfide 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.


  • Underground hydrogen sulfide detection
  • Industrial hydrogen sulfide detection
  • Environmental protection device

Useful Link:

DFRobot Gravity: H2S Sensor (Calibrated) – I2C & UART


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

Package Includes:

1 x Gravity: H2S Signal Conversion Board

1 x H2S sensor probe

1 x Gravity – 4pin Cable

SKU: 1283760 Category:


Detection Gas

Hydrogen sulfide (H2S)

Detection range

0~100ppmWorking Current

Working Voltage

3.3~5.5V DC

Working Current


Output Signal

I2C, UART (0~3V), analog voltage

Working Temperature


Working Humidity

15~90%RH (non-condensing)

Storage Temperature


Storage Humidity

15~90%RH (non-condensing)


>2 years (in the air)

Adapter Plate Size



Arduino, ESP32, Raspberry pi

Shipping Weight 0.1 kg
Shipping Dimensions 9 × 7 × 3 cm

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Country Of Origin: China