This MQ-3 Alcohol gas sensor detects the concentration of alcohol gas in the air and produces an analogue voltage reading. Breathalyzers can detect concentrations ranging from 0.04 mg/L to 4 mg/L. The sensor operates in temperatures ranging from -10 to 50°C and draws less than 150 mA at 5 V. The heater creates the necessary working conditions for sensitive components. The enveloped MQ-3 has six pins, four of which are used to fetch signals and the other two to provide a heating current. The simple analogue voltage interface of the sensor requires only one analogue input pin from your microcontroller.
Features
- Very high sensitivity to Alcohol gas
- MQ3 Sensor is SnO2
Applications
- Traffic Police Drunk Drive detection system
- Portable alcohol detector.
SPECIFICATIONS
| Model |
MQ-3 |
| Type | Gas Sensor |
| No. of Pin |
06 |
| Input Voltage | 5V DC |
| Input Current | 150mA |
| Diameter | 17mm |
| Height | 8.8mm |
| Make | Made in India |
| Temperatures Range | -10 to 50° C |
| Detection Range | 25~500ppm alcohol |
| Country of Origin | China |
