Description

KY-026 Flame Sensor Module for Infrared Fire Detection

The KY-026 Flame Sensor Module is a compact infrared detection board designed to detect flame sources and infrared light within the 760nm-1100nm wavelength range.

With both digital and analog outputs, this module provides flexible signal options for Arduino projects, ESP32 applications, robotics, and electronic experiments.

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Infrared Flame Detection Principle

The Infrared Flame Sensor detects infrared radiation generated by flames.

When a flame source is detected, the onboard LM393 comparator processes the signal and provides a stable output.

The adjustable potentiometer allows users to set the detection sensitivity according to different environments.

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Product Features

• KY-026 infrared flame detection module
• Detects flame and infrared light sources
• Detection wavelength: 760nm-1100nm
• Working voltage: 3.3V-5V DC
• Digital output (DO)
• Analog output (AO)
• Adjustable sensitivity
• LM393 voltage comparator onboard
• Compact PCB design

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Technical Specifications

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Digital and Analog Output

The KY-026 module provides two output modes:

Digital Output (DO)

The digital output provides a simple HIGH/LOW signal.

It is suitable for:

• Flame alarm projects
• Automatic warning systems
• Basic Arduino applications

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Analog Output (AO)

The analog output provides a variable voltage signal according to flame intensity.

It allows users to:

• Measure flame strength
• Create more advanced monitoring systems
• Process sensor data with microcontrollers

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Arduino Flame Sensor Applications

The Arduino Flame Sensor is widely used in maker and educational projects.

Typical applications include:

DIY Fire Alarm System

Build a simple flame detection prototype with Arduino or ESP32.

Robot Fire Detection

Used in robot projects to detect flame sources and perform automatic actions.

Electronics Learning Projects

Suitable for:

• Students
• Beginners
• Electronics enthusiasts

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Wiring Guide

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Why Choose KY-026 Flame Sensor Module?

Compared with simple light sensors, the KY-026 Flame Sensor Module is designed specifically for infrared flame detection.

Its adjustable sensitivity, dual output design, and wide voltage compatibility make it a practical choice for Arduino projects, DIY fire detection systems, and electronics learning applications.

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Compatible Platforms

This module works well with:

• Arduino UNO
• Arduino Nano
• ESP32
• Raspberry Pi
• Other microcontroller boards

For complete development solutions, you can also explore our:

Arduino Boards Collection

and

Sensor Modules Collection

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Building an Arduino-based safety monitoring project? Explore our Arduino Boards and other Sensor Modules to create a complete electronics solution.

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Learn More

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

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FAQ

Q1: What is a KY-026 Flame Sensor Module used for?

The KY-026 Flame Sensor Module is used to detect infrared radiation from flames. It is commonly used in Arduino projects, fire detection experiments, and robotics applications.

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Q2: What is the detection range of this flame sensor?

The sensor responds to infrared wavelengths approximately from 760nm to 1100nm. Actual detection distance depends on flame size and environmental conditions.

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Q3: Can KY-026 work with Arduino UNO?

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

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Q4: Does this sensor detect smoke?

No. The KY-026 detects infrared radiation from flames. It is not a smoke sensor and should not replace professional fire alarm equipment.

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Q5: What is the difference between AO and DO output?

AO provides an analog signal related to flame intensity, while DO provides a digital ON/OFF detection signal based on the adjustable threshold.