Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	3.3V - 5V DC
Detection Wavelength	760nm - 1100nm
Detection Angle	60 degrees
Output Signal	Digital Switching Output (0 and 1)
Comparator Chip	LM393
Sensitivity Adjustment	Potentiometer adjustable
Board Dimensions	32mm x 14mm x 8mm
Mounting Hole Diameter	3mm
Interface Type	3-Pin PH2.0 Connector
Application Compatibility	Arduino, Raspberry Pi, STM32

6 reviews

Anonymous

Mar 24, 2026

Rating: 5/5

Reliable and durable

We have used dozens of these in our workshop for student prototypes. They are robust and handle repeated testing well. Highly recommended for educational purposes.

Anonymous

Mar 21, 2026

Rating: 5/5

Great for university projects

Bought this for my final year project on smart home safety. It integrates seamlessly with microcontrollers. The digital output is clean and reliable.

Anonymous

Mar 19, 2026

Rating: 4/5

Works well indoors

Very sensitive to candle flames and lighters. I noticed it can be triggered by strong infrared heat sources too, so keep that in mind for your coding logic. Overall a solid purchase.

Anonymous

Mar 17, 2026

Rating: 5/5

Fast response time

The reaction time is impressive. As soon as a flame appears within the cone, the LED on the board lights up and the output pin goes low instantly. Excellent for real-time monitoring.

Anonymous

Mar 12, 2026

Rating: 4/5

Good value but needs calibration

The module is responsive and detects flame sources quickly from about 1 meter away. You do need to spend some time adjusting the potentiometer to avoid false positives from sunlight or bright LEDs.

Anonymous

Mar 05, 2026

Rating: 5/5

Perfect for fire safety projects

This sensor works exactly as described. I used it with an Arduino Uno to build a simple fire alarm system. The sensitivity adjustment pot makes it very easy to calibrate for different lighting conditions.

5 FAQ

Q: Does it work outdoors in direct sunlight?

A: Direct sunlight contains infrared radiation that may trigger the sensor. For outdoor use, we recommend adding a physical shield or adjusting the sensitivity threshold carefully to minimize false alarms.

Q: Is this compatible with 5V Arduino boards?

A: Yes, absolutely. The module operates on a voltage range of 3.3V to 5V, making it fully compatible with Arduino Uno, Nano, Mega, and most other 5V microcontrollers.

Q: What is the maximum detection distance?

A: Under normal indoor conditions, the effective detection range is typically up to 100cm (approx. 3 feet) for a standard candle flame. This varies based on flame intensity and ambient light.

Q: How many pins does the connector have?

A: The module features a 3-pin interface: VCC (Power), GND (Ground), and DO (Digital Output). Some versions also include an AO (Analog Output) pin depending on the specific batch.

Q: Can this sensor detect smoke?

A: No, this module is specifically designed to detect the infrared wavelength of flames (firelight). It does not detect smoke particles; you would need a dedicated smoke sensor for that.

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