MQ-3 Alcohol Gas Sensor Module (Alcohol Detector Sensor)

The MQ-3 Alcohol Gas Sensor Module is designed to detect alcohol and ethanol vapors in the air with high sensitivity and fast response. Based on the MQ-3 gas sensing element, it provides both analog and digital outputs for easy interfacing with Arduino, ESP32, Raspberry Pi, STM32, and other microcontrollers. It is widely used in breath alcohol detection, safety monitoring, and embedded sensing applications.

Key Features -

• High sensitivity to alcohol vapors

• Dual analog and digital outputs

• Adjustable sensitivity via onboard potentiometer

• Fast response and recovery time

• Onboard LM393 comparator

• Power and status indicator LEDs

• Stable and reliable performance

• Low power consumption

• Easy microcontroller interfacing

• Suitable for alcohol detection systems

Specifications -

• Product type - Gas Sensor Module

• Sensor type - MQ-3 Gas Sensor

• Detection target - Alcohol and Ethanol Vapors

• Operating voltage - 5V DC

• Output type - Analog and Digital

• Detection range - Suitable for Alcohol Detection

• Preheat time - Approximately 20 Seconds (Longer Recommended for Stable Operation)

• Response time - Fast

• Comparator IC - LM393

• Board type - Gas Sensor Module

Applications -

• Breath alcohol detectors

• Alcohol vapor monitoring

• Industrial safety systems

• Laboratory equipment

• Air quality monitoring

• Arduino and IoT projects

• Embedded electronics

• Safety and automation systems