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 80cm (depending on flame intensity)
Comparator Chip	LM393
Sensitivity Adjustment	Adjustable via Potentiometer
Indicator LED	Power and Trigger Status LEDs
Mounting Hole Diameter	3.0mm
PCB Dimensions	32mm x 17mm
Compatible Boards	Arduino, Raspberry Pi, STM32

6 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Bought 10 for our school club

We purchased these for a student competition involving fire-fighting robots. All units performed consistently. They are robust enough to handle being moved around by students and still maintain their calibration.

Anonymous

Mar 29, 2026

Rating: 5/5

Perfect for my fire safety robot project

This sensor works exactly as described. I connected it to my Arduino Uno, and the sensitivity adjustment potentiometer made it very easy to calibrate for different light conditions. It detects a lighter flame instantly from about 50cm away.

Anonymous

Mar 24, 2026

Rating: 4/5

Works well, limited range in bright sun

Indoors, this thing is fantastic. Outdoors in direct sunlight, the range drops significantly because of IR interference, which is expected for this type of sensor. For indoor alarm systems, it's a solid 5 stars.

Anonymous

Mar 12, 2026

Rating: 4/5

Good value but needs calibration

Great little module for the price. Out of the box, it was a bit too sensitive to ambient light, but after tweaking the screw with a small screwdriver, it works perfectly. Just make sure you test it in the environment where you plan to use it.

Anonymous

Mar 04, 2026

Rating: 5/5

Reliable and compact

The build quality is surprisingly good for the cost. The PCB is clean, soldering points are solid, and the infrared receiver tube is well-secured. Highly recommend for any home automation or safety prototype.

Anonymous

Mar 02, 2026

Rating: 5/5

Easy to integrate

I am new to electronics, and this was very straightforward to wire up. The pinout is clearly marked on the board. The digital output makes coding simple since I don't have to deal with analog readings unless I want to.

5 FAQ

Q: What is the power consumption of this sensor?

A: The module typically consumes around 20mA when active. It is low-power enough to be run directly from most microcontroller GPIO pins or a standard 5V rail without needing a separate relay for power.

Q: Is the mounting hole size standard for servo horns?

A: The mounting holes are 3.0mm in diameter. While they may align with some servo horns, they are standard M3 screw size, which is common for general PCB mounting standoffs rather than specifically designed for servo attachments.

Q: Can this detect a candle flame through glass?

A: Infrared radiation can pass through certain types of glass, but standard window glass often blocks significant amounts of IR. We recommend testing with your specific glass type, but generally, direct line-of-sight without barriers yields the best results.

Q: Will this trigger falsely under normal LED room lighting?

A: Under normal LED or fluorescent lighting, false triggers are rare. However, incandescent bulbs emit more IR and might cause issues if the sensitivity is set too high. The onboard potentiometer allows you to adjust the threshold to ignore ambient light sources.

Q: Does this module output an analog signal or just digital?

A: This module primarily provides a digital switching output (High/Low) via the DO pin. However, some versions of this board also expose an AO pin for analog output if you need to read varying intensity levels, though the product title specifies the digital alarm configuration.

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