Consider using this sensor for your next project that detects combustible gases such as LPG, Propane, Hydrogen and Methane. This Module makes use of the MQ-2 combustible gas detector chip. Other circuit components such as the LM393 analog comparator chip on this module makes it easy to integrate this module into a project that can detect combustible gases. The Module requires a 5V power supply and provides a digital Logic output (1 or 0) and an analog level output (0-4V). The digital logic output is LOW (0) when no gas is detected but goes HIGH (1) when gas concentration in the environment reaches the set threshold set via a potentiometer on the module. The analog level output provides an output voltage within the range of 0 to 4V based on the concentration of the combustible gas in the environment; 0V for lowest concentration, 4V for maximum concentration.

*The MQ-2 device on this module uses a heating element. After initial power ON, Please wait at least 20 Seconds before reading outputs to ensure data validity .