MQ-2 Smoke & Gas Sensor Module

MQ-2 Flammable Gas & Smoke Sensor Breakout Module

The MQ-2 semiconductor gas sensor features a tin dioxide (SnO2) sensitive layer with high sensitivity to Liquefied Petroleum Gas (LPG), propane, methane, hydrogen, and combustible smoke. Includes an onboard comparator providing both analog level and digital alarm outputs.

Specifications

• Detectable Gases: LPG, Propane, Methane, Butane, Alcohol, Smoke
• Detection Concentration: 300 to 10,000 ppm
• Operating Voltage: 5.0V DC (Heater power: approx. 800 mW)
• Dual Outputs: Analog voltage (0-5V) and Digital TTL comparator output
• Preheat Time: 24 to 48 hours for calibrated readings
• Includes status indicator LED and threshold tuning potentiometer