LM393 IR Flame Detection Sensor Module for Arduino
The flame sensor module detects IR light in the 760nm–1100nm wavelength range using a photodiode sensitive to the spectrum emitted by flames and candles. The LM393 comparator converts the photodiode current to a digital TTL output that goes LOW when flame IR is detected, with the detection threshold set by an onboard potentiometer. An analogue output provides the raw photodiode signal for intensity measurement via ADC.
- 760nm–1100nm detection band — matches flame and candle emission spectrum
- Digital and analogue outputs — threshold detection and raw intensity
- Adjustable threshold — onboard potentiometer
- Detection angle — approximately 60°
- 3.3V–5V supply — direct GPIO connection
Best for
Fire alarm prototypes, candle presence detection, pilot light monitors, automatic gas valve controllers, fire-fighting robots, and safety system projects detecting open flame.
Why Kunkune
Shipped from UK stock. 60-day returns, no minimum order. Fast Royal Mail delivery.
Buying in bulk? For orders of 10+ units, contact us for trade pricing.
