Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Detection Wavelength	760nm - 1100nm
Operating Voltage	3.3V - 5V DC
Output Signal	Digital Switching Output (0 and 1)
Detection Distance	Up to 100cm (depending on flame intensity)
Comparator Chip	LM393
Sensitivity Adjustment	Potentiometer adjustable
PCB Dimensions	32mm x 18mm
Mounting Hole Diameter	3mm
Response Time	Microsecond level
Interface Type	3-pin or 4-pin connector compatible

6 reviews

Anonymous

Mar 27, 2026

Rating: 4/5

Solid component

Works well with both 3.3V and 5V logic levels. The only reason for 4 stars instead of 5 is that the included pins were not pre-soldered, but that's standard for these modules. Easy to fix.

Anonymous

Mar 24, 2026

Rating: 5/5

Perfect for Arduino fire alarm projects

This sensor works exactly as described. I connected it to my Arduino Uno and the sensitivity adjustment pot made it easy to calibrate for my specific room lighting conditions. It detects a lighter flame instantly from about 80cm away.

Anonymous

Mar 22, 2026

Rating: 5/5

Bought 10 for student kits

We purchased these for our high school robotics competition. All 10 units worked flawlessly. The students found them easy to wire up using the standard 3-pin servo connectors. Great educational tool.

Anonymous

Mar 19, 2026

Rating: 4/5

Good value, needs calibration

The module is compact and well-built. Out of the box, it was a bit too sensitive to sunlight, but after turning the potentiometer slightly, it works great indoors. Just remember this detects IR radiation, not smoke.

Anonymous

Mar 18, 2026

Rating: 5/5

Fast shipping and great performance

Arrived quickly and was packaged securely. Tested it immediately against a matchstick flame and the LED indicator lit up instantly. The range is impressive for such a small sensor.

Anonymous

Mar 01, 2026

Rating: 5/5

Reliable detection

Integrated this into a smart home prototype. The digital output is clean and doesn't bounce. It's very responsive to candle flames and gas stove ignition. Highly recommend for DIY safety systems.

5 FAQ

Q: Is this compatible with Raspberry Pi?

A: Yes, it is compatible. Since the module operates at 3.3V to 5V, you can connect the VCC to the 3.3V pin on the Raspberry Pi and the DO (Digital Output) to a GPIO pin. Ensure you configure the GPIO as an input in your code.

Q: Can this sensor detect smoke?

A: No, this is an infrared flame sensor designed to detect the light spectrum emitted by flames (760nm-1100nm). It cannot detect smoke particles; you would need a dedicated smoke sensor for that.

Q: Will direct sunlight trigger false alarms?

A: Strong direct sunlight contains infrared radiation and can potentially trigger the sensor. We recommend adjusting the sensitivity potentiometer counter-clockwise to reduce sensitivity or shielding the sensor from direct window light during installation.

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

A: The 3-wire version typically includes VCC, GND, and Digital Output (DO). The 4-wire version adds an Analog Output (AO), allowing you to read varying intensity levels of the flame rather than just a simple on/off signal.

Q: Does this module come with jumper wires?

A: The package usually includes the PCB module and a set of header pins for soldering. Jumper wires are generally not included unless specified in the specific bundle option you selected at checkout.

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