MQ-2 Smoke Gas Sensors detection module

The Grove Gas Sensor (MQ2) module is useful for gas leakage detection (home and industry). It is suitable for detecting H2, LPG, CH4 and CO.

Specifications
Input Voltage: 5VDC
Current: 150mA
Output: TTL Digital 0 and 1 ( 0.1 and 5V)
Analog signal output: 0.1-0.3 V (related to pollution), the maximum concentration of the voltage is approx. 4V

Note: After the sensor is powered, it needs to warm up for about 20 seconds, the measured data is stable, the sensor heating is a normal phenomenon, because the internal heating wire if hot is not normal.

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