MQ-2 Gas Sensor Module for Flammable Gas and Smoke

About this product

Semiconductor gas sensor module sensitive to LPG, propane, methane, hydrogen, and smoke. Uses tin dioxide (SnO2) sensitive layer with analog and digital outputs. Suited for gas leakage detection, fire alarms, and industrial safety monitoring with Arduino and Raspberry Pi.

Ultrasonic, IR, temperature, humidity, motion, current, camera and RF sensor modules - plus relay, logic-level and breakout boards for prototyping and production.

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Specifications

Operating Voltage

5V DC

Detection Range

300 to 10000 ppm (flammable gas)

Target Gases

LPG, propane, methane, hydrogen, smoke, alcohol

Output

Analog (0V to 5V) and digital (TTL)

Heater Voltage

5.0V ± 0.1V

Heater Resistance

29Ω ± 3Ω

Preheat Time

Minimum 48 hours

Dimensions

56 x 20 x 18mm