4-Pin Infrared Flame Sensor Module 3.3V-5V for Arduino
4-Pin Infrared Flame Sensor Module 3.3V-5V for Arduino
4-Pin Infrared Flame Sensor Module – Adjustable Sensitivity for Arduino DIY Projects
Take your Arduino-based fire detection and safety projects to the next level with this compact, highly responsive 4-Pin Infrared Flame Sensor Module. Designed for makers, hobbyists, and electronics engineers alike, this versatile module detects flame and infrared light sources with precision — all while fitting neatly onto a lightweight 3.2 × 1.4 cm PCB. Made in Mainland China.
Key Features
- Wide-Spectrum Detection: Detects flames and infrared light sources with wavelengths between 760nm and 1100nm, making it suitable for a broad range of fire-detection applications.
- Long-Range Sensing: Capable of detecting a lighter flame from up to 80cm away — the larger the flame, the greater the detection range.
- 60° Detection Angle: Broad sensing angle with heightened sensitivity to flame spectra for reliable real-world performance.
- Adjustable Sensitivity: Fine-tune the module's response using the onboard blue digital potentiometer — no extra tools required.
- Clean Signal Output: LM393 comparator delivers a clean, stable waveform with a driving capability exceeding 15mA.
- Dual Output Modes: Supports both DO (digital switch: 0/1) and AO (analog voltage) outputs, giving you maximum flexibility for your project.
- Easy Installation: Includes fixed bolt holes for secure, hassle-free mounting in your enclosure or prototype.
- Broad Voltage Compatibility: Operates reliably on 3.3V to 5V systems, compatible with most microcontrollers and Arduino boards.
Specifications
- Working Voltage: 3.3V – 5V
- Detectable Wavelength: 760nm – 1100nm
- Detection Range: Up to 80cm (lighter flame)
- Detection Angle: ~60°
- Output: DO (digital) + AO (analog)
- Comparator IC: LM393
- PCB Size: 3.2 × 1.4 cm
- Weight: 2g
- Origin: Made in Mainland China
How to Use
- Connect the module's output pin directly to an IO port on your microcontroller or Arduino board.
- Adjust the onboard potentiometer to set your desired sensitivity level.
- Keep the sensor at a safe distance from open flames to prevent heat damage — a minimum of 80cm is recommended for lighter-sized flames.
- Use the analog output (AO) with AD conversion for higher measurement accuracy in advanced projects.
What's in the Box
- 1 × Infrared Flame Sensor Module
Important Notes
Actual product color may vary slightly from images due to monitor settings and lighting conditions. Please allow ±1–2cm measurement deviation due to manual measurement. This module is intended for DIY, educational, and prototyping use only — always follow safe electrical and fire-handling practices.
For guidance on electronics safety in maker and DIY environments, visit the U.S. Consumer Product Safety Commission (CPSC).
Frequently Asked Questions
Q: What wavelength range does this infrared flame sensor module detect?
A: The flame sensor module detects infrared light sources and flames in the 760nm to 1100nm wavelength range, making it effective for detecting most open flame sources used in Arduino fire alarm and detection projects.
Q: Is this flame sensor module compatible with standard Arduino boards?
A: Yes! The module operates on 3.3V–5V, which is compatible with most Arduino boards (Uno, Mega, Nano, etc.) as well as other microcontrollers. Its output pin connects directly to any digital or analog IO port.
Q: Can I adjust the sensitivity of the flame sensor?
A: Absolutely. The onboard blue digital potentiometer lets you fine-tune the detection sensitivity to suit your specific project needs — no additional components required.
Q: What is the maximum detection distance for this sensor?
A: Under standard conditions, the sensor can detect a lighter flame from approximately 80cm away. Larger flames can be detected from even greater distances.