Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	3.3V - 5V DC
Detection Wavelength	760nm - 1100nm
Output Signal	Digital Switch Output (0 and 1)
Detection Distance	Up to 80cm (depending on flame intensity)
Comparator Chip	LM393
Board Dimensions	32mm x 14mm x 8mm
Mounting Hole Diameter	3.0mm
Interface Type	3-Pin PH2.54 Connector
Sensitivity Adjustment	Potentiometer Adjustable
Compatible Platforms	Arduino, Raspberry Pi, STM32

6 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Great for learning embedded systems

Bought this for a university project on IoT safety systems. The digital output makes interfacing with Arduino incredibly simple. Documentation could be better, but standard tutorials work fine.

Anonymous

Mar 27, 2026

Rating: 5/5

Exceeded expectations

For the cost, you really can't beat this. It's sensitive enough to detect a match strike from a reasonable distance. Shipping was fast and the component arrived well-packaged.

Anonymous

Mar 23, 2026

Rating: 5/5

Perfect for my robotics project

This sensor works exactly as described. I integrated it into a small fire-fighting robot, and the detection range is impressive for such a compact module. The potentiometer makes it easy to tune sensitivity.

Anonymous

Mar 21, 2026

Rating: 4/5

Good value, needs calibration

Solid build quality for the price. It took a few minutes to calibrate the threshold using the onboard pot, but once set, it reliably detects candle flames from about 60cm away.

Anonymous

Mar 21, 2026

Rating: 5/5

Reliable and fast response

We used ten of these in our competition bots. They all performed consistently with fast reaction times when exposed to a lighter flame. Highly recommended for educational kits.

Anonymous

Mar 10, 2026

Rating: 4/5

Compact and effective

Very small form factor which helped in my tight chassis design. Just be aware that strong sunlight can sometimes trigger false positives if sensitivity is maxed out.

5 FAQ

Q: Does it work outdoors in direct sunlight?

A: Direct sunlight contains IR radiation that can interfere with detection. We recommend shielding the sensor or adjusting the sensitivity potentiometer carefully if used in bright outdoor environments.

Q: What is the maximum voltage this board can handle?

A: The module operates safely between 3.3V and 5V DC. Applying voltage higher than 5V may damage the comparator chip and the IR receiver.

Q: Does this module output analog or digital signals?

A: This specific model provides a digital switch output (HIGH/LOW). If you need analog values representing flame intensity, please look for our analog variant.

Q: Can this sensor detect smoke?

A: No, this is a flame sensor designed to detect the specific wavelength of fire light (760nm-1100nm). It cannot detect smoke particles; you would need a dedicated smoke sensor for that.

Q: Is the mounting hole size standard for M3 screws?

A: Yes, the mounting holes are 3.0mm in diameter, which is compatible with standard M3 screws and standoffs commonly used in electronics projects.

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