Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	5V DC
Detection Wavelength	760nm - 1100nm
Output Signal	Digital Switching Output (0 and 1)
Comparator Chip	LM393
Detection Distance	Up to 100cm (depending on flame intensity)
Sensitivity Adjustment	Adjustable via Potentiometer
Board Dimensions	32mm x 17mm
Mounting Hole Diameter	3.0mm
Indicator LED	Power and Detection Status LEDs
Compatibility	Arduino, Raspberry Pi, STM32, ESP8266

6 reviews

Anonymous

Mar 31, 2026

Rating: 4/5

Good value, clear instructions needed

The hardware quality is solid and the relay clicks loudly when triggered. I deducted one star because the pinout diagram on the back is a bit faint. Once I found a tutorial online, it worked great.

Anonymous

Mar 26, 2026

Rating: 4/5

Works well but needs calibration

Great sensor module. Just remember to spend time calibrating the potentiometer in the environment where you will use it, otherwise ambient light might trigger false positives.

Anonymous

Mar 19, 2026

Rating: 5/5

Perfect for my safety project

This module worked exactly as described. The sensitivity adjustment is very responsive, allowing me to tune it specifically for candle flames versus larger heat sources. Integration with my Arduino Uno was seamless.

Anonymous

Mar 11, 2026

Rating: 5/5

Reliable fire detection

Using this as part of a custom home monitoring system. It detects a lighter flame from about 80cm away consistently. Very happy with the purchase.

Anonymous

Mar 04, 2026

Rating: 5/5

Bought 10 for student kits

We purchased these for a high school robotics competition. All units functioned correctly out of the box. The detection range is impressive for the price point.

Anonymous

Mar 01, 2026

Rating: 5/5

Easy for beginners

As someone new to electronics, I found this very easy to wire up. The three pins are clearly labeled, and there are plenty of code examples available online.

5 FAQ

Q: Does this module output analog or digital signals?

A: This specific 2-in-1 module provides a digital switching output (HIGH/LOW) via the DO pin. It does not provide an analog voltage reading proportional to flame intensity.

Q: What is the maximum current the onboard relay can handle?

A: The onboard relay is typically rated for small loads (approx. 1A at 250VAC or 30VDC). For high-power devices, please use the signal output to trigger an external, higher-capacity relay.

Q: Does the package include jumper wires?

A: No, the package includes only the sensor module. Jumper wires and microcontroller boards are sold separately.

Q: Can this be powered by 3.3V instead of 5V?

A: While the sensor itself might react at 3.3V, the module is designed for 5V operation to ensure the comparator and relay function reliably. We recommend sticking to 5V for best performance.

Q: Is this sensitive enough to detect a cigarette ember?

A: The sensor is optimized for open flames which emit specific infrared wavelengths. A glowing cigarette ember may not produce enough IR radiation to trigger the alarm consistently unless very close.

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