Alcohol Sensor (MQ-3)
This module is made using Alcohol Gas Sensor MQ3. It is a low cost semiconductor sensor which can detect the presence of alcohol gases at concentrations from 0.05 mg/L to 10 mg/L. The sensitive material used for this sensor is SnO2, whose conductivity is lower in clean air. It’s conductivity increases as the concentration of alcohol gases increases. It has high sensitivity to alcohol and has a good resistance to disturbances due to smoke, vapor and gasoline. This module provides both digital and analog outputs. MQ3 alcohol sensor module can be easily interfaced with Microcontrollers, Arduino Boards, Raspberry Pi etc.
Features
Low Cost
Fast Response
Stable and Long Life
Good Sensitivity to Alcohol Gas
Both Digital and Analog Outputs
On-board LED Indicator
Technical Data
Concentration : 0.05 mg/L ~ 10 mg/L Alcohol
Operating Voltage : 5V ±0.1
Current Consumption : 150mA
Operation Temperature : -10°C ~ 70°C
Pin Out
- VCC – Input Power Supply
- GND – Supply Ground
- DO – Digital Output
- AO – Analog Output
Applications
Vehicle Alcohol Detector
Portable Alcohol Detector
