DFRobot Fermion MEMS Ethanol Gas Sensor (1–500 ppm) - Analog Output
The DFRobot Fermion MEMS Ethanol Gas Sensor is a compact breakout module for qualitative detection of ethanol (EtOH) vapors from 1 to 500 ppm. It operates on 3.3V to 5V DC and provides an analog voltage output, making it compatible with Arduino, Raspberry Pi, and other microcontroller platforms for breathalyzer, air quality, and food quality monitoring projects.
Features
- Qualitative MEMS ethanol (EtOH) gas sensor with a 1–500 ppm detection range.
- Compact 13 x 13 x 2.5 mm footprint with ultra-low power consumption (<20 mA).
- Analog voltage output for easy interfacing with 3.3V/5V ADCs on Arduino, ESP32, or Raspberry Pi.
- Features rapid response/recovery and a long operational lifespan of ≥5 years in air.
- Includes pre-soldered 2.54mm pitch header pins for quick breadboard or PCB integration.
Out of stock
This Fermion series sensor utilizes advanced Micro-Electro-Mechanical System (MEMS) technology to deliver a miniaturized, low-power solution for ethanol vapor detection. The MEMS design minimizes heat generation and reduces preheating time while maintaining high sensitivity, characterized by a sensitivity ratio R0/Rs ≥ 3 in 150 ppm EtOH. The sensor outputs a variable analog voltage proportional to gas concentration, requiring only a simple ADC read for data acquisition.
Designed for stable operation in environments from -10°C to 60°C and 15–90% RH (non-condensing), this sensor is suited for portable and fixed monitoring applications. It is important to note that this sensor provides qualitative measurements and is not recommended for use in safety-critical systems. Proper handling, including removal of the protective film and avoidance of corrosive gases, silicon vapors, and condensation, is essential for optimal performance and longevity.
Additional Information
| Weight | 0.001 kg |
|---|---|
| Dimensions | 1.3 × 1.3 × 0.25 cm |















