
The 4-Pin Flame Sensor Module is a compact infrared-based sensor designed to detect the presence of a flame or fire source. It can be easily connected to Arduino, ESP32, Raspberry Pi, and other microcontroller boards for fire detection and alarm projects.
The module typically provides VCC, GND, Digital Output (DO), and Analog Output (AO) pins. The digital output can be adjusted using the onboard potentiometer, while the analog output provides a variable signal according to the detected infrared flame intensity.