Description

Key Features of Flame Sensor Module:
– High Photo Sensitivity
– Fast Response Time
– Sensitivity adjustable
– Detects a flame or a light source of a wavelength in the range of 760nm-1100 nm.
– Detection range: up to 80 cm.
– Adjustable detection range.
– Detection angle about 60 degrees, it is sensitive to the flame spectrum.
– Comparator chip LM393 makes module readings stable.
– Operating voltage 3.3V-5V.
– Digital and Analog Output.
– Power indicator and digital switch output indicator.
Module Connections
There is a 4-pin header on the assembly.
1 x 4 Header
GND / G = Ground
‘+’ = VCC (3.3 – 5V)
A0 = Analog output, connects to analog input on uC
D0 = Digital output, connects to digital input on uC
Maximum Ratings
VCC: 3.3 – 5V
Maximum Current Draw: < 7mA
Wavelength: 760-1100nm (typical)
Dimensions (PCB): 32 x 14mm

Available Versions

This product includes two connector versions:

3-Pin Flame Sensor Module

Pin definition:

The 3-pin version provides a simple ON/OFF detection signal, ideal for basic flame detection applications.

4-Pin Flame Sensor Module

Pin definition:

The 4-pin version provides both digital and analog signals, allowing users to measure flame intensity more accurately.

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Adjustable Sensitivity Design

The onboard potentiometer allows users to adjust the detection threshold according to different environments.

This feature makes the Fire Detection Sensor suitable for:

• Indoor safety experiments
• Robot fire detection projects
• Smart home prototypes
• Educational electronics projects

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Applications

Arduino Flame Sensor Projects

This module is commonly used with Arduino UNO, ESP32, Raspberry Pi, and other microcontrollers.

Typical applications include:

• Flame detection robots
• Fire alarm prototypes
• Safety monitoring systems
• Automatic extinguishing projects
• Electronics learning kits

For beginners starting Arduino projects, you can also check our Arduino UNO R3 boards and sensor modules collection.

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Technical Specifications

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Why Choose Our Flame Sensor Module?

Compared with basic light detection modules, this Fire Detection Module is optimized for flame wavelength detection, providing better reliability for fire-related projects.

Its compact size, adjustable sensitivity, and dual output options make it a practical choice for engineers, makers, students, and electronics enthusiasts.

Looking for more sensors for your next project? Explore our Water Flow Sensors and Environmental Sensors collection.

 

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Learn more

Want to see how this sensor works? Watch this tutorial video and learn how to connect and use it in your DIY project.

FAQ 

Q1: What is a Flame Sensor Module used for?

A Flame Sensor Module is used to detect infrared radiation produced by flames. It is commonly used in Arduino projects, fire detection experiments, and robotics applications.

Q2: What is the difference between the 3-pin and 4-pin versions?

The 3-pin version provides a digital output signal only, while the 4-pin version includes both digital and analog outputs for more accurate flame intensity measurement.

Q3: Can this Flame Sensor Module work with Arduino UNO?

Yes. This module supports 3.3V-5V operation and can be directly connected to Arduino UNO, ESP32, Raspberry Pi, and other microcontroller platforms.

Q4: Does this sensor detect smoke?

No. This module detects infrared radiation from flames. It is not a smoke sensor and cannot replace professional fire alarm equipment.

Q5: How can I adjust detection sensitivity?

The onboard potentiometer can be rotated to adjust the detection threshold according to your application environment.