Description
Description
The MQ-2 Combustible Gas Sensor Module is designed for detecting flammable gases such as LPG, propane, hydrogen, methane, alcohol, and carbon monoxide. It features both analog and digital outputs, allowing precise gas concentration measurement or simple threshold-based detection. Operating at 5V DC with an onboard comparator and adjustable potentiometer, it ensures stable performance and easy integration with Arduino and other microcontrollers. Suitable for gas leakage alarms, air quality monitoring, and safety systems in laboratories, hospitals, and industrial environments.
Features
- MQ-2 semiconductor gas sensing element
- Detects LPG, propane, hydrogen, methane, alcohol, CO
- Dual output: Analog (05V) and Digital (TTL)
- Adjustable sensitivity via onboard potentiometer
- Operating voltage 5V DC
- Built-in power and status indicator LEDs
- Fast response and recovery time
- Preheat time approximately 20 seconds
- Onboard LM393 comparator circuit
- Compatible with Arduino and 5V microcontrollers
- Suitable for gas leak alarm systems
- Applicable for air quality monitoring
Specifications
- Operating Voltage: 5V DC
- Operating Current: 150 mA (heating)
- Sensor Type: Semiconductor (SnO2)
- Gas Detection: LPG, Propane, Hydrogen, Methane, Alcohol, CO
- Detection Range: 30010000 ppm (combustible gases)
- Analog Output Voltage: 05V
- Digital Output Voltage: 0V or 5V TTL
- Comparator IC: LM393
- Preheat Time: 20 s
- Response Time: <10 s
- Operating Temperature: -10C to 50C
- Operating Humidity: 5%95% RH (non-condensing)
- Module Dimensions: 32 20 22 mm
Links
- MQ-2 Datasheet
- MQ-2 Combustible Gas Sensor Module 3D Model
- MQ-2 Combustible Gas Sensor Module 3D Case
Tutorials
- How MQ2 Gas Sensor works ? | 3D Animated
- Smoke and Gas Sensor MQ2: Everything You Need to Know
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