4Pin KY-026 Flame Sensor Module
KY-026 Flame Sensor Module (4-Pin)
Fire Detection Sensor Infrared Flame Detection Safety & Robotics Projects
The KY026 Flame Sensor Module is a flame detection module designed to sense fire or flame sources using infrared light. It detects light wavelengths in the range of 760 nm 1100 nm, which are typically emitted by flames.
This module provides both analog and digital outputs, allowing it to be used for fire detection systems, safety alarms, and robotics projects.
Infographic Overview
Basic Specifications
Feature | Details | |
Detection Type | Infrared Flame Detection | |
Operating Voltage | 3.3V 5V | |
Output Type | Analog (A0) & Digital td> Detection Distance | Up to ~1 meter |
Sensitivity Adjustment | Yes (Potentiometer) |
Main Components
Component | Description |
Flame Sensor Diode | Detects infrared light from flames |
Comparator IC (LM393) | Converts analog signal into digital output |
Sensitivity Potentiometer | Adjusts flame detection sensitivity |
Indicator LEDs | Shows power and detection status |
Pin Configuration
Pin | Function |
VCC | Power supply (3.3V5V) |
GND | Ground |
A0 | Analooutput |
Working Principle
The module detects flames using infrared radiation sensing.
Step-by-Step Operation
1 Flames emit infrared radiation in specific wavelengths.2 The flame sensor diode detects this infrared light.3 The signal is converted into an analog voltage.4 The comparator circuit checks if the signal exceeds the threshold.5 If detected, the module outputs a digital HIGH/LOW signal.
Sensor Detection Diagram
Flame Source'Infrared Radiation'KY-026 Flame Sensor(IR Detection)Analog / Digital Output'Microcontroller
Common Applications
Industrial flame monitoring Smart IoT safety devices
Compatible Microcontrollers
The module easily interfaces with:
Arduino Uno
Arduino Nano
ESP32
Raspberry Pi
KY-026 vs KY-003 Flame Sensor
Feature | KY-026 | KY-003 |
Output | Analog + Digital | Digital only |
Sensitivity Control | Yes | No |
Applications | Advanced detection | Basic flame sensing |
Advantages
Fast flame detection Adjustable sensitivity Analog and digital output options Compact and low-cost module Easy integration with microcontrollers
Limit readings Detects flame light, not heat
Example DIY Project
Fire Detection Alarm System
Components
KY026 Flame Sensor Module
Arduino Uno
Buzzer module
LED indicator
Working
Sensor detects flame presence Arduino receives the signal Buzzer alarm acti