Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Sensing Element	Infrared Photodiode
Detection Wavelength	760nm - 1100nm
Operating Voltage	3.3V - 5V DC
Output Signal	Digital Switching (0 and 1)
Detection Distance	Up to 80cm (varies by flame intensity)
Comparator Chip	LM393
Adjustability	Sensitivity via Potentiometer
Indicator LED	Power and Trigger Status
Mounting Hole Diameter	3.0mm
Board Dimensions	32mm x 14mm x 8mm

6 reviews

Anonymous

Mar 27, 2026

Rating: 5/5

Fast response time

Impressed by how quickly the output pin goes low when a flame is introduced. Ideal for applications where rapid detection is critical. The build quality feels solid for a budget component.

Anonymous

Mar 26, 2026

Rating: 4/5

Simple integration with Raspberry Pi

Used this with a Raspberry Pi GPIO pin. Since it outputs a digital signal, no ADC is needed. Make sure to use a pull-up resistor if your specific setup requires it, though the board has basic circuitry built-in.

Anonymous

Mar 24, 2026

Rating: 3/5

Works but range is limited indoors

The sensor functions well, but don't expect the full 80cm range in a brightly lit room. It performs much better in dimmer conditions. Still useful for close-range detection applications.

Anonymous

Mar 14, 2026

Rating: 5/5

Reliable for student projects

Bought ten of these for our high school robotics club. They are robust and easy to wire up. Students had no trouble integrating them into their fire-fighting robot prototypes.

Anonymous

Mar 02, 2026

Rating: 5/5

Perfect for Arduino Fire Alarms

This sensor works exactly as described. I connected it to my Arduino Uno and was able to detect a lighter flame from about 60cm away. The sensitivity potentiometer makes it easy to fine-tune for different environments.

Anonymous

Mar 01, 2026

Rating: 4/5

Good value, needs calibration

Great little module for the price. Out of the box, it was a bit too sensitive to ambient light, but after adjusting the screw on the back, it only triggers on actual flames. Just remember it detects IR, so strong sunlight can interfere if not shielded.

5 FAQ

Q: Can this detect a candle flame through glass?

A: Infrared radiation can pass through certain types of glass, but standard window glass may block some IR wavelengths. We recommend testing with your specific glass type, but direct line-of-sight yields the best results.

Q: Does this module output analog or digital signals?

A: This module outputs a digital signal (HIGH/LOW). When a flame is detected, the DO pin goes LOW. There is no analog output pin on this specific version.

Q: Is this waterproof for outdoor use?

A: No, this PCB module is not waterproof. If you intend to use it outdoors, you must house it in a weatherproof enclosure with an IR-transparent window.

Q: What is the power consumption of this sensor?

A: The module typically consumes around 20mA when active. It is suitable for battery-powered projects, but we recommend turning it off via a transistor or relay if long-term battery life is critical.

Q: Will this trigger on hot objects like a stove without a flame?

A: The sensor is tuned to the specific wavelength of flames (760-1100nm). While extremely hot objects emit IR, this module is generally designed to ignore standard heat sources unless they are producing an open flame or glowing intensely.

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