MQ-3 – Alcohol Gas Sensor

The MQ3 Alcohol Ethanol Gas Sensor Module is designed for detecting alcohol (ethanol) vapors in the air. It utilizes a gas-sensitive semiconductor sensor that provides high sensitivity to ethanol with fast response and recovery times. This module is widely used in breathalyzer devices, safety applications, and industrial alcohol detection.

Key Features:

• High sensitivity to alcohol (ethanol) vapors
• Fast response and recovery time
• Stable and long lifespan
• Easy to interface with microcontrollers and development boards
• Analog output signal for easy integration
• Low power consumption

Technical Specifications:

• Detection Range: 25ppm to 5000ppm Ethanol
• Sensitivity: ≥ 0.05mV/ppm (Ethanol)
• Heating Voltage: 5V ± 0.2V (AC or DC)
• Load Resistance: Adjustable
• Preheat Time: 24 hours
• Response Time: ≤ 10 seconds
• Recovery Time: ≤ 30 seconds
• Operating Temperature Range: -20°C to +50°C
• Operating Humidity: ≤ 95% RH
• Power Consumption: ≤ 800mW
• Dimensions: 32mm x 20mm x 22mm
• Weight: 5g

Applications:

• Breathalyzers: Used in devices for detecting blood alcohol content.
• Safety Applications: Ensures safety in workplaces by monitoring alcohol vapor levels.
• Industrial Alcohol Detection: Applied in industrial settings to detect and monitor ethanol vapors.
• Smart Home Devices: Integrated into smart home safety systems for alcohol detection.
• Laboratory Testing: Used in laboratories for experiments involving alcohol detection.