Description
Reviews
| 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 |
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.
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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