The MQ‑2 Gas Sensor Module is a compact and reliable semiconductor gas sensor optimized for detecting flammable gases like LPG, methane, propane, hydrogen, and smoke. It operates on 3.3–5 V and provides both analog and digital outputs, with adjustable sensitivity via an onboard potentiometer. Ideal for gas leakage alarms, fire detection systems, industrial safety setups, and IoT projects. Compatible with Arduino, ESP32, and Raspberry Pi platforms.
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