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Home / Computer Hardware, Monitors & Peripherals / 3-Wire/4-Wire Flame Sensor Module for Fire Source Detection, Infrared Reception, and Fire Alarm

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Operating Voltage 3.3V to 5V DC
Detection Wavelength 760nm - 1100nm
Output Signal Digital DO (0/1) & Analog AO
Detection Angle 60 Degrees
Detection Distance 0cm to 100cm
Response Time 15 Microseconds
Working Temperature -10°C to +50°C
Wire Configuration Selectable 3-Wire or 4-Wire
PCB Dimensions 32mm x 14mm x 5mm
Indicator LEDs Power (Green) & Detection (Red)

5 reviews

A

Anonymous

Apr 03, 2026

Rating: 3/5

Decent but instructions lacking

The hardware is fine, but I had to look up online tutorials to understand the 4-wire vs 3-wire setup. Once wired correctly, it functions as expected.

A

Anonymous

Mar 02, 2026

Rating: 5/5

Fast response time

I tested the response time with a lighter and it was instant. The digital output makes it very easy to interface with microcontrollers.

A

Anonymous

Feb 18, 2026

Rating: 4/5

Good sensitivity, watch out for sunlight

Works well indoors. Just note that direct sunlight can trigger false positives since it detects infrared. Great value for hobby projects.

A

Anonymous

Feb 06, 2026

Rating: 5/5

Reliable for detection modules

Integrated this into a larger safety monitoring system. It consistently detects flame presence within the specified range. Highly recommended for prototyping.

A

Anonymous

Jan 26, 2026

Rating: 5/5

Perfect for Arduino Safety Prototypes

This sensor works flawlessly with my Arduino Uno. I used it to build an automatic shutoff system for a model engine. The sensitivity is adjustable via the potentiometer.

5 FAQ

Q: Can this be used with a Raspberry Pi?

A: Yes, this module is compatible with Raspberry Pi GPIO pins. Ensure you connect the VCC to 5V or 3.3V depending on your configuration.

Q: Is this certified for residential fire alarms?

A: No, this module is designed for educational, hobbyist, and industrial prototyping purposes only. It is not certified for residential life safety systems.

Q: What is the maximum detection distance?

A: Under optimal conditions, the sensor can detect a flame up to 100cm away. However, effective range depends on flame intensity.

Q: Does this work in direct sunlight?

A: Direct sunlight contains infrared radiation which may trigger the sensor. It is recommended for indoor use or shielded environments.

Q: What is the difference between the 3-wire and 4-wire setup?

A: The 3-wire setup provides digital output only. The 4-wire setup includes an additional analog output pin for varying signal strength measurement.

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