The IR Flame Sensor Module detects fire by sensing infrared (IR) light in the wavelength range of 760nm to 1100nm — the range that flame emits strongly. The 4 pin flame sensor runs on 3.3V to 5V DC and gives both a digital output (DO) and an analog output (AO) pin so you can read either a simple yes or no signal or an actual intensity value.
A non-obvious fact is that sunlight and incandescent bulbs also emit IR in this wavelength range, which means the ir flame sensor can trigger false alarms in bright outdoor environments. Keep the sensor away from direct sunlight during testing. The ir flame sensor 4 pin connects to Arduino Uno or Nano using just four wires.
Students, hobbyists, and fire safety project builders use this sensor. Connect VCC, GND, and DO to get your first flame alert working right away. StemVolt provides this sensor with trusted quality, ensuring reliable performance and easy usability.
Related Products:
- Check out The Flame And Fire Sensor Module 3-pin
Features:
- Operating voltage of 3.3V to 5V DC allows direct connection to both 3.3V and 5V microcontroller boards
- Digital output (DO) pin gives a clear HIGH or LOW signal when flame crosses the set threshold
- Analog output (AO) pin provides a variable voltage reading showing the flame intensity level continuously
- flame sensor datasheet-rated 4-pin interface includes VCC GND DO and AO for maximum wiring flexibility
Technical Specifications:
| Specification | Details |
|---|---|
| Operating Voltage | 3.3V To 5V DC |
| Output Channel | 01 |
| No. of Pin | 04 |
| Wavelength Range | 760nm To 1100nm |
| Interface Pins | VCC, GND, DO, AO |
Applications:
- A fire alarm project uses this sensor to detect a flame and sound a buzzer
- An IR Flame Sensor Module reads DO output and triggers a relay to cut power supply on fire
- A flame detection robot reads IR data and steers away from any fire source automatically
Package Includes:
- 1 x IR Flame Sensor Module 4-Pin
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