Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	DC 12V
Detection Wavelength	760nm - 1100nm
Output Signal	Digital Switch Output (0 and 1)
Detection Range	Up to 1.5 meters
Response Time	15 microseconds
Comparator Chip	LM393
PCB Dimensions	32mm x 14mm
Mounting Hole Diameter	3mm
Indicator LED	Power and Trigger Status LEDs
Application Scope	Fire alarms, robotics, and safety systems

6 reviews

Anonymous

Mar 19, 2026

Rating: 3/5

Works but instructions are sparse

The hardware functions well, but the documentation provided was minimal. I had to look up pinouts online. If you know your way around basic electronics, this is a non-issue.

Anonymous

Mar 15, 2026

Rating: 5/5

Perfect for my Arduino project

This sensor works exactly as described. I connected it to my Arduino Uno and it detected a candle flame instantly from about a meter away. The sensitivity potentiometer makes it easy to adjust for different environments.

Anonymous

Mar 12, 2026

Rating: 4/5

Good value but needs calibration

The module is compact and well-built. It took a few minutes to calibrate the sensitivity correctly to avoid false triggers from sunlight, but once set, it performs reliably. Great for the price.

Anonymous

Mar 07, 2026

Rating: 4/5

Reliable detection

Using this to monitor a gas stove pilot light setup. It has been running for two weeks without any false alarms. The only downside is the wire length could be slightly longer.

Anonymous

Mar 07, 2026

Rating: 5/5

Fast response time

Impressed by how quickly the relay activates when a flame is introduced. I am using this in a custom fire suppression prototype, and the latency is negligible. Highly recommended for DIY safety projects.

Anonymous

Mar 02, 2026

Rating: 5/5

Bulk purchase for our lab

We bought ten of these for our student workshop. All units arrived in perfect condition and performed consistently. The build quality is solid for an entry-level sensor module.

5 FAQ

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

A: The onboard relay is typically rated for small loads, usually around 1A at 250VAC or 30VDC. For high-power devices, we recommend using the signal output to trigger an external, higher-capacity relay.

Q: Can this sensor detect natural gas leaks?

A: No, this module is specifically designed to detect infrared radiation from flames (fire). It cannot detect gas leaks; you would need a dedicated combustible gas sensor for that purpose.

Q: Is this compatible with 5V microcontrollers like ESP8266?

A: Yes, while the module operates at 12V, the digital output signal is compatible with 5V logic levels used by most microcontrollers. Just ensure you share a common ground between the power source and the MCU.

Q: How do I reverse the output logic (HIGH vs LOW on detection)?

A: This specific module outputs a LOW signal when a flame is detected and HIGH when no flame is present. To reverse this logic, you would need to add an external transistor inverter circuit or handle the logic inversion in your software code.

Q: Does sunlight cause false alarms?

A: Direct strong sunlight can potentially trigger the sensor since it contains infrared light. However, you can use the onboard potentiometer to adjust the sensitivity threshold to minimize false positives in bright environments.

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