The MQ-2 Gas Sensor is a compact, low-cost gas detection module finely tuned for sensing LPG, propane, and hydrogen. Thanks to its built-in boost circuit and adjustable sensitivity control, its output voltage increases in proportion to gas concentration, making it well-suited for gas leak detection use cases. With fast response and recovery times, the sensor reliably signals changes in gas levels and supports both analog (AOUT) and digital (DOUT) outputs for easy integration.
Operating on a supply voltage between 2.5 V and 5.0 V, the MQ-2 module is sized at 40 mm × 21 mm and includes mounting holes for secure installation. Whether for DIY safety systems, smart home automation, or environmental monitoring, this sensor offers a versatile, responsive, and accessible solution for detecting combustible gases.
Product is fantastic, senses a variety of different gases, all at an affordable cost. I've used it for a few days now, and I have had no issues. It does much for little cost. Wonderful and works well.
S
Stéphane
Excellent product
Consumes little, quick reaction, simple calibration ... Effective! I just love it
