MQ-3 Alcohol Sensor Gas Detector for Arduino Projects

MQ-3 Alcohol Detector Gas Sensor Module is a user-friendly alcohol sensor ideal for detecting alcohol vapors, making it versatile for various applications. This alcohol detector sensor is specifically designed for high sensitivity to alcohol and offers less sensitivity to other gases. The sensor alcohol module is often implemented in devices like breathalyzers to measure blood alcohol concentrations effectively.

Key Features - MQ-3 Alcohol Detector Gas Sensor Module

• Power requirements: 5 VDC @ ~165 mA (heater on) / ~60 mA (heater off)
• Current Consumption: 150mA
• DO output: 0.1 and 5V
• AO output: 0.1-0.3 V relative to pollution, maximum concentration voltage about 4V
• Detecting Concentration: 0.05-10mg/L Alcohol
• High sensitivity to alcohol with a fast response time
• LED indicator for Signal output light
• Stable and long service life with reliable stability
• Rapid response recovery features
• Simple drive circuit

Applications

This MQ-3 Alcohol Detector Gas Sensor Module is valuable in automotive systems for detecting alcohol levels in cars and as an alcohol sensor for custom home electronics projects. It serves in portable alcohol detectors used by law enforcement and as a sensor in Arduino alcohol sensor projects.

Technical Specifications

How to Use - MQ-3 Alcohol Detector Gas Sensor Module

• Connect the module to a 5V power supply.
• Adjust the onboard potentiometer for desired alcohol concentration threshold.
• Utilize analog output for concentration measurement through a microcontroller’s ADC.
• Use digital output for simple high/low indication.
• Allow sensor module to warm up for stable readings.
• Calibrate sensor using known alcohol concentrations for accuracy in specific applications.

Package Includes

• 1 x MQ-3 Alcohol Detector Gas Sensor Module

Additional Resources

Video Tutorials