Gas Sensor

A gas sensor is an electronic sensor used to detect the presence or concentration of certain gases in the surrounding environment. It converts changes in gas concentration into an electrical signal that can be read by a microcontroller such as Arduino or ESP32. Gas sensors are commonly used in projects for detecting smoke, LPG, methane, carbon monoxide, and other gases, depending on the sensor type. They are useful in gas leakage alarms, safety systems, air-quality monitoring, and smart home projects.