4PIN IR Infrared Flame Detection Sensor Module
The 4-pin infrared flame sensor detects flame and fire sources using IR light within 760–1100nm. Ideal for fire detection, safety systems, and Arduino projects. Adjustable sensitivity, fast response, and simple digital or analog output for flexible integration.
The 4-Pin IR Infrared Flame Detection Sensor Module is designed to detect fire or flame sources by sensing infrared light in the 760nm–1100nm wavelength range. It is capable of detecting flames from lighters, candles, alcohol, and other visible fire sources.
This sensor provides both analog and digital outputs, allowing flexible use in a wide range of applications. The digital output becomes HIGH when flame is detected (threshold adjustable), while the analog output gives a variable voltage based on flame proximity and intensity.
Equipped with a sensitive photodiode, an LM393 comparator chip, and adjustable potentiometer, this module is suitable for flame alarm systems, fire-fighting robots, and safety automation projects. It can be easily used with Arduino, Raspberry Pi, ESP32, and other development boards.
Specifications:
Sensor Type: IR Flame Sensor (IR receiver photodiode)
Wavelength Detection: 760nm – 1100nm
Operating Voltage: 3.3V – 5V DC
Output Pins:
AO – Analog Output (0–5V)
DO – Digital Output (HIGH/LOW)
VCC – Power Supply
GND – Ground
Comparator IC: LM393
Detection Distance: Typically up to 80cm (depending on flame size and brightness)
Adjustable Sensitivity: Yes (via potentiometer)
Board Size: ~32mm x 14mm
Weight: ~3g