Flame Sensor Module KY-026 (4-pin)

Product Overview

The KY-026 flame sensor module detects open flames by their infrared light, within about 80 cm.

It provides a digital alarm output with an adjustable threshold as well as an analogue output for intensity.

Key Features

Applications

Benefits

Easy to connect

Standard pins and supply voltages work with Arduino, ESP32, Raspberry Pi Pico and similar boards.

Well supported

Widely used part with plenty of libraries and example code.

Low cost

An affordable way to add sensing to a project.

Specifications

Why Choose This Product?

It’s a simple, low-cost way to start fire-detection and fire-fighting-robot projects.

Beginner Use Cases

• Flame alarm with a buzzer
• Fire-fighting robot sensor
• Measure flame brightness

Professional Use Cases

• Smart-building monitoring
• IoT sensor networks
• Automation triggers
• Product prototypes

Package Includes

• 1 × KY-026 flame sensor module

Please Note

• For learning and prototyping — not a certified fire-safety device
• Strong sunlight or other IR sources can affect readings

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