DFRobot Fermion MEMS Hydrogen H2 Gas Detection Sensor (Breakout, 0.1-1000ppm)


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SKU: 1680990
  1. Compact size, measuring only 13*13*2.5mm
  2. Low power consumption, operating current <20mA
  3. High sensitivity and rapid response recovery
  4. Advanced MEMS technology
  5. Gas detected: Hydrogen (H2)
  6. Sensitivity: R0(in air)/Rs(in 200ppm H2) ≥ 5
  7. Lifespan: ≥5 years (in air)


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Brand: DF Robot
Category: Gas and Dust Sensor

This is DFRobot Fermion MEMS Hydrogen H2 Gas Detection Sensor (Breakout, 0.1-1000ppm). Fermion: MEMS H2 sensor employs state-of-the-art micro-electromechanical system (MEMS) technology, endowing the sensor with compact dimensions (13x13x2.5mm), low power consumption (<20mA), minimal heat generation, short preheating time, and swift response recovery. The sensor can measure the concentration of hydrogen gas qualitatively. It is suitable for the hydrogen leakage alarm and other application scenarios.

The MEMS series currently encompasses 11 different types of gas sensors (HCHO, CO, CH4, VOC, NH3, H2S, EtOH, Smoke, Odor, H2, NO2), which can be combined as per specific requirements.


  • Air quality monitoring: measures the level of H2 and other pollutants in the ambient air.
  • Automotive emission control: monitors the H2 emission from fuel cell vehicles and adjusts the fuel cell operation to optimize the performance and efficiency.
  • Industrial safety: detects the leakage or exposure of H2 and other flammable gases in industrial processes or workplaces.


Note: This sensor is capable of only qualitative measurements. For quantitative measurements, kindly consider purchasing the Gravity: Factory Calibrated Electrochemical CO Sensor (0-1000 ppm, I2C & UART).


Precautions for use:

  • Kindly remove the protective film before usage.
  • To prevent exposure to volatile silicon compounds vapors (such as silicone adhesive, hair gel, silicone rubber, or other locations where volatile silicon compounds are present).
  • Avoid exposure to high concentrations of corrosive gases (such as H2S, SOX, Cl2, HCl, etc.).
  • Prevent contamination from alkalis, alkali metal salts, and halogens.
  • Refrain from prolonged exposure to extreme environments (such as high temperatures, high humidity, high pollution).
  • Avoid contact with water, condensation, and freezing.
  • Minimize excessive vibration, impact, and dropping.
  • Please refrain from employing this module in systems that involve personal safety concerns.
  • For extended periods of non-usage, it is advisable to preheat the module for at least 24 hours.


For more info., click below.


  1. Easy to use.
  2. Compact size, measuring only 13*13*2.5mm
  3. Low power consumption, operating current <20mA
  4. High sensitivity and rapid response recovery
  5. Advanced MEMS technology
  6. Gas detected: Hydrogen (H2)
  7. Sensitivity: R0(in air)/Rs(in 200ppm H2) ≥ 5
  8. Lifespan: ≥5 years (in air)
  9. Good quality product

Package Includes:

1 x DFRobot Fermion MEMS Hydrogen H2 Gas Detection Sensor (Breakout, 0.1-1000ppm)

1 x 2.54mm pitch header pin

SKU: 1680990 Category:
Detecting Range


Detection Gas


Operating Voltage (VDC)

3.3 – 5 V

Max. Operating Current (mA)


Output Signal

Analog Voltage

Operating Temperature (°C):


Operating humidity

15-90%RH (non-condensing)


≥5 years (in air)

Length (mm):


Width (mm):


Height (mm):


Weight (g):

1 (approx)

Shipping Weight 0.012 kg
Shipping Dimensions 6 × 6 × 3 cm
6 Months Warranty

This item is covered with a supplier warranty of 6 months from the time of delivery against manufacturing defects only. This is a quality product from the original manufacturer. Only manufacturing defects are covered under this warranty. Reimbursement or replacement will be done against manufacturing defects.

What voids the warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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Country Of Origin: China