KY-026 Flame Sensor Module
KY-026 Flame Sensor Module detects infrared light emitted by fire. This module has both digital and analog outputs and a potentiometer to adjust the sensitivity. Commonly used in fire detection systems.
Compatible with Arduino, Raspberry Pi, ESP32 and other microcontrollers.
KY-026 SPECIFICATIONS
This module consist of a 5mm infra-red receiver LED, a LM393 dual differential comparator, a 3296W trimmer potentiometer, 6 resistors,2 indicator LEDs and 4 male header pins. The board features an analog and a digital output.
| Operating Voltage | 3.3V ~ 5.5V |
| Infrared Wavelength Detection | 760nm ~ 1100nm |
| Sensor Detection Angle | 60° |
| Board Dimensions | 1.5cm x 3.6cm [0.6in x 1.4in] |
CONNECTION DIAGRAM
Connect the board’s analog output (A0) to pin A0 on the Arduino and the digital output (D0) to pin 3.
Connect the power line (+) and ground (G) to 5V and GND respectively.
| KY-026 | Arduino |
|---|---|
| A0 | Pin A0 |
| G | GND |
| + | +5V |
| D0 | Pin 2 |
KY-026 ARDUINO CODE
In this Arduino sketch we’ll read values from both digital and analog interfaces on the KY-026, use a lighter or a candle to interact with the flame detector module.
The digital interface will send a HIGH signal when fire is detected by the sensor, turning on the LED on the Arduino (pin 13). Turn the potentiometer clock-wise to increase the detection threshold and counter-clockwise to decrease it.
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