MQ-3 Alcohol Gas Sensor Module

This alcohol sensor is suitable for detecting alcohol concentration on your breath, just like your common breathalyzer. It has a high sensitivity and fast response time. Sensor provides an analog resistive output based on alcohol concentration. 

Specification:

• Product Name: Gas Sensor Module
• Model: MQ-3
• Type: Analog
• Detecting Type: Alcohol, Ethanol
• Rated Voltage: DC 3.3 - 5V
• Detecting Range: 0.04 mg/L to 4 mg/L
• Pin Quantity: 4
• Pin Definition : AO - Analog Output, DO - Digital Output, GND - Ground, VCC - Voltage To Current Converter