Description

The MQ-3 Alcohol Sensor Module is a compact and affordable gas detection module designed to detect alcohol vapor in the air. With both analog and digital outputs, it is ideal for use in breathalyzers and alcohol monitoring systems. Powered by a 5V supply, the sensor uses a heating element and a platinum-coated tin dioxide sensing material for high alcohol sensitivity. It offers fast response times and adjustable sensitivity, making it suitable for a wide range of applications, including DIY projects and safety systems.

Key Features & Benefits

• High Sensitivity to alcohol with minimal interference from other gases.
• Adjustable Sensitivity via a potentiometer.
• Dual Output (Analog & Digital) for versatile use.
• Fast Response Time (< 1 second).
• Low Power Consumption (800mW).
• Easy Integration with Arduino and Raspberry Pi.

Applications

• Breathalyzers and alcohol detection devices.
• Alcohol Monitoring in vehicles and workplaces.
• Smart Devices and safety systems.
• Air Quality Monitoring in environments with alcohol use.

Specifications

• Operating Voltage: 5V DC ± 0.1V
• Sensing Range: 25 to 500 ppm (alcohol)
• Response Time: < 1 second; < 30 seconds after power-up
• Outputs: Analog (AOUT) and Digital (DOUT)
• Power Consumption: 800mW
• Operating Temperature: -10°C to 50°C
• Humidity Range: 0 to 95% RH
• Dimensions: 32mm x 21mm x 20mm