KY-026 IR Flame Detection Sensor

KY-026 IR Flame Detection Sensor Module – Full Description

The KY-026 IR Flame Detection Sensor Module is a compact and reliable electronic sensor designed to detect the presence of fire or flame by sensing infrared (IR) light emitted from flames. It is widely used in fire alarm systems, safety monitoring projects, and Arduino or microcontroller-based applications.

This module is built on a high-quality red PCB and features an infrared flame sensor, a comparator IC, and an adjustable potentiometer for sensitivity control. The sensor can detect flame sources within the infrared wavelength range of approximately 760 nm to 1100 nm, making it suitable for detecting common fire sources such as candles, lighters, and open flames.

Key Features

• Detects infrared light emitted by flames

• Adjustable sensitivity using onboard potentiometer

• Provides both digital (DO) and analog (AO) outputs

• Fast response time and stable performance

• Compact design suitable for embedded systems

• LED indicators for power and detection status

Working Principle

The KY-026 sensor detects infrared radiation produced by flames. When IR light intensity exceeds the set threshold, the onboard comparator triggers the output.

• Analog Output (AO): Provides a continuous voltage signal proportional to flame intensity

• Digital Output (DO): Outputs HIGH or LOW based on the sensitivity threshold

The sensitivity can be adjusted using the blue trimmer potentiometer mounted on the board.

Pin Configuration

• VCC: Power supply (3.3V – 5V DC)

• GND: Ground

• DO: Digital output

• AO: Analog output

Technical Specifications

• Operating Voltage: 3.3V – 5V DC

• Detection Distance: Up to ~80 cm (depending on flame size and environment)

• Detection Angle: Approximately 60°

• IR Detection Wavelength: 760 nm – 1100 nm

• Output Type: Digital & Analog

• Board Size: Compact and lightweight

Applications

• Fire alarm and fire detection systems

• Home and industrial safety systems

• Arduino and IoT-based projects

• Robotics flame-following or avoidance systems

• Educational electronics and training projects

Image Design Details (As Provided)

• Clean white background

• No watermarks or unnecessary objects

• Brand logo placed at the top-left corner, scaled 3× smaller than the component

• Image Resolution: 800 × 800 pixels

• File Size: ~80 KB

• Resolution: 96 DPI

• Bit Depth: 24-bit color