The gas sensitive material used in the MQ-2 gas sensor is SnO2, a low electrically conductive material in clean air. When there is combustible gas in the surrounding air, the electrical conductivity of the sensor will increase with the higher intensity of the combustible gas. Here, we can convert the changing electrical conductivity into output signal by building a simple circuit
1.Detected Gas: Combustible Gas, Smoke;
2.Detection Intensity: 300~ 0000ppm(Combustible Gas);
3.Working Voltage: 5.0V±0.1V AC or DC;
4. Preheating Time: ≥2 minutes.
1 x MQ-2 Gas Sensor Module.