Product description
MQ-3 is a gas sensor with high sensitivity to alcohol and some sensitivity to benzine. The sensor features a fast response time, high sensitivity, good stability, and long service life. Popular sensor ? widely supported with examples for various platforms
Applications:
- Suitable for breath alcohol testers (breath analyzers)
Specifications:
- Operating voltage: 5 V
- Current consumption: 40 mA
- Outputs: Digital and analog
Pinout:
- AO: Analog output
- DO: Digital output
- GND: Ground
- VCC: 5 V power supply
Heater (sensor warming):
- Voltage: 5 V
- Current consumption: 40 mA
- Resistance: 31 ohms
