Product description
MQ-3B is a gas sensor with high sensitivity to alcohol (ethanol C2H5OH) and some sensitivity to light naphtha. The sensor features fast response time, high sensitivity, good stability, and long service life. A popular sensor with many available examples for different platforms.
Applications:
- Suitable for alcohol testers (breath analysis)
Specifications:
- Supply voltage: 5 V
- Current consumption: 180 mA
- Power: 900 mW (the sensor becomes hot during operation)
- Output: analog
- Detection range: 25–500 ppm
- Dimensions: ø17 x 9.4 mm (without pins)
