MQ3 Alcohol Gas Sensor Module

The MQ3 Alcohol Gas Sensor Module is a highly sensitive and reliable sensor designed to detect alcohol vapors, including ethanol, in the air. Perfect for breathalyzer projects, alcohol detection systems, and DIY IoT applications, this module is widely used in safety and monitoring systems.

Equipped with both analog and digital outputs, the MQ3 sensor offers flexible interfacing with Arduino, ESP8266, ESP32, Raspberry Pi, and other microcontrollers. With fast response time and adjustable sensitivity, it’s ideal for real-time detection in embedded electronics and automation systems.

Key Features:

• Detects alcohol, ethanol, and vapor concentrations
• Operating voltage: 5V DC
• Dual output: Analog (AO) and Digital (DO)
• Adjustable sensitivity via onboard potentiometer
• Long lifespan and stable performance
• Compatible with Arduino, ESP32, ESP8266, Raspberry Pi
• Fast response time for real-time applications
• Compact and easy-to-integrate module design

Applications:

• Alcohol breath analyzers
• Smart ignition interlock systems
• Home and industrial safety systems
• IoT alcohol detection projects
• DIY Arduino and sensor-based experiments