MQ2 Gas Sensor Detector Module
MQ2 overview
MQ-2 Smoke LPG Butane Hydrogen Gas Sensor Detector Module Smoke LPG Butane Hydrogen Gas Sensor Detector Module is useful for gas leakage detection (home and industry). It is suitable for detecting H2, LPG, CH4, CO, Alcohol, Smoke, or Propane. Due to its high sensitivity and fast response time, measurements can be taken as soon as possible. The sensitivity of the sensor can be adjusted by a potentiometer.
MQ-2 gas sensor using gas-sensitive material is to be clean air in the lower conductivity of Tin oxide (SnO2). When the sensor when flammable gases are present in the environment in which the sensor's conductivity with increasing concentration of combustible gas in the air increases. Use a simple circuit to convert the changes in conductivity and output signal that corresponds to the concentration of the gas.
MQ-2 gas sensors' have a higher sensitivity to liquefied petroleum gas, propane, hydrogen, and the detection of gas and other combustible vapors is ideal. This sensor can detect a variety of flammable gas, and is a low-cost sensor for many applications.
Key specifications
Datasheet
MQ2 features
- Preheat Duration 20 seconds
- Can be Used to Measure or Detect LPG, Alcohol, Propane, Hydrogen, CO, and even methane
- Can be used as a Digital or analog sensor
- The Sensitivity of a Digital pin can be varied using the potentiometer
MQ2 pinout
| Name | Description |
|---|---|
| Vcc | This pin powers the module, typically the operating voltage is +5V |
| Ground | Used to connect the module to the system ground |
| Digital Out | You can also use this sensor to get digital output from this pin, by setting a threshold value using the potentiometer |
| Analog Out | This pin outputs 0-5V analog voltage based on the intensity of the gas |
MQ2 applications
- Domestic gas leakage detector
- Industrial Combustible gas detector
- Portable gas detector
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