MQ-2 Combustible Gas Sensor

The MQ2 Gas Sensor Module is designed for detecting multiple gases including smoke, methane (CH4), and butane (C4H10). It features a semiconductor sensor that changes its resistance based on the gas concentration, providing an analog output signal. This module is used for various applications such as air quality monitoring, gas leak detection, and safety systems, offering versatility and reliable performance.

Key Features:

• Detects smoke, methane, and butane gases
• Analog output voltage proportional to gas concentration
• High sensitivity to multiple gases
• Includes heating element for gas sensing
• Simple interface with microcontrollers

Technical Specifications:

• Gas Types Detected: Smoke, Methane (CH4), Butane (C4H10)
• Output Type: Analog voltage
• Supply Voltage: 5V DC
• Current Consumption: 150mA (typical)
• Heating Resistance: 2.2kΩ (typical)
• Response Time: 10 seconds to 1 minute (varies by gas and concentration)
• Operating Temperature Range: -20°C to +50°C
• Dimensions: 32mm x 20mm x 25mm (approximately)
• Mounting Type: Typically through-hole or with a connector
• Preheat Time: 24 hours for calibration

Applications:

• Gas Detection: Measures concentration of smoke, methane, and butane gases in the air.
• Safety Systems: Integrated into safety devices to detect and alert users to gas leaks.
• Air Quality Monitoring: Used in air quality monitoring systems to detect harmful gases.
• DIY Projects: Ideal for hobbyist and educational projects involving gas detection.
• Industrial Applications: Employed in industrial settings to monitor gas levels and ensure safety.