MQ3 Alcohol Gas Sensor Module

MQ3 Alcohol Gas Sensor Module is used for detecting alcohol concentration on your breath, like a Breathalyzer. This sensor has a high sensitivity and fast response time. The module outputs a voltage from 0 to 5V relative to the alcohol concentration.

Note: PCB dimension, and color may vary slightly.

Note: Power off circuit before connecting/disconnecting the sensor

Specifications

• 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