Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	3.3V - 5V DC
Detection Wavelength	760nm - 1100nm
Detection Range	Up to 100cm (depending on flame intensity)
Output Signal	Digital Switching Output (0 and 1)
Comparator Chip	LM393
Interface Type	3-Wire or 4-Wire Connector
Sensitivity Adjustment	Potentiometer included
PCB Dimensions	32mm x 18mm x 8mm
Mounting Hole Diameter	3.0mm
Application Compatibility	Arduino, Raspberry Pi, STM32

6 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Excellent sensitivity range

Being able to switch between 3-wire and 4-wire configurations makes this versatile for different microcontroller setups. The IR receiver is sensitive enough for early detection without too many false positives.

Anonymous

Mar 27, 2026

Rating: 5/5

Fast response time

The reaction time is impressive. As soon as a lighter is ignited within range, the output pin goes low immediately. Integrating this into our smart home prototype was seamless.

Anonymous

Mar 26, 2026

Rating: 5/5

Perfect for fire safety projects

This sensor works exactly as described. I used it with an Arduino Uno to build a simple fire alarm system. The sensitivity adjustment via the potentiometer is very responsive, allowing me to fine-tune the detection range easily.

Anonymous

Mar 23, 2026

Rating: 5/5

Reliable IR detection

I tested this against various light sources to ensure it wasn't just reacting to brightness. It specifically targets the IR spectrum of flames effectively. Great component for industrial prototyping.

Anonymous

Mar 19, 2026

Rating: 4/5

Good value, clear instructions needed

The module itself is high quality and detects candle flames from about 80cm away. However, beginners might need to look up a tutorial online as the included manual is quite brief regarding the 4-wire setup.

Anonymous

Mar 12, 2026

Rating: 4/5

Solid build quality

The PCB looks clean and the soldering points are solid. One star off because the mounting holes are slightly tight for standard M3 screws, but nothing a little force couldn't fix.

5 FAQ

Q: Does this come with connecting wires?

A: The package typically includes the sensor module only. You will need to provide your own jumper wires to connect it to your microcontroller, which allows you to choose the exact length and color coding you prefer.

Q: What is the difference between the 3-wire and 4-wire configurations?

A: The 3-wire setup uses VCC, GND, and DO (Digital Output). The 4-wire setup adds an AO (Analog Output) pin, which allows you to read the varying intensity of the flame rather than just a binary on/off signal.

Q: How do I adjust the detection distance?

A: There is a blue potentiometer on the board. Rotate it clockwise to increase sensitivity (longer range) and counter-clockwise to decrease sensitivity (shorter range). Use a small screwdriver for precise adjustments.

Q: Can this sensor detect sunlight or will it trigger false alarms?

A: While strong direct sunlight contains IR radiation, the sensor is tuned specifically for the flicker and wavelength of flames. However, we recommend testing in your specific environment and adjusting the potentiometer to minimize false triggers from ambient light.

Q: Is this module compatible with 3.3V logic boards like ESP32?

A: Yes, the module operates comfortably within the 3.3V to 5V DC range, making it fully compatible with ESP32, ESP8266, Raspberry Pi, and standard 5V Arduino boards.

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