Red Plate Flame Sensor Module KY-026

Red Plate Flame Sensor Module KY-026

Sensors
DET576
Part.No: KY-026
€2.50
In Stock
Immediate Dispatch
The KY-026 Red Plate Flame Sensor Module detects open flames by sensing infrared light in the 760–1100 nm range. Features both analog (AO) and digital (DO) outputs, an adjustable sensitivity potentiometer, and a 60° detection angle. Ideal for fire alarm and safety systems with Arduino or compatible boards.

 

The KY-026 Red Plate Flame Sensor Module (MPN: KY-026) is a compact IR-based flame detection module designed to sense the presence of open fire by detecting infrared wavelengths between 760 nm and 1100 nm — the spectral range emitted by most flames. It provides both an analog output (AO) for real-time signal intensity readings and a digital output (DO) for simple high/low threshold detection, making it equally useful for precise analog measurements and straightforward digital trigger applications.

Key Features

  • High-Sensitivity IR Receiver: Detects infrared light in the 760–1100 nm range → optimised for real flame detection
  • Dual Output: AO (analog) provides a real-time thermistor voltage signal, DO (digital) outputs a high/low logic level → flexible integration with both analog and digital systems
  • Adjustable Sensitivity: On-board potentiometer allows fine-tuning of the detection threshold → reduces false alarms in varying ambient light conditions
  • 60° Detection Angle: Wide field of view → covers a broad area without repositioning
  • Power Supply Indicator LED: Visual confirmation that the module is powered → simplifies troubleshooting during setup
  • Comparator Output Indicator LED: Lights up when the DO threshold is triggered → instant visual feedback without needing a display
  • Wide Input Voltage Range: Accepts 0–15 V DC → compatible with a variety of power rails
  • Compact Form Factor: 36 × 16 mm with 3 mm mounting holes → easy to integrate into enclosures and project builds

Pinout & Wiring

PINSymbolDescription
1VCCPower supply (0–15 V DC)
2GNDGround
3DODigital output — high/low logic level signal
4AOAnalog output — real-time thermistor voltage signal

Connect VCC and GND to your power supply. Read AO with an analog input pin for variable intensity data, or connect DO to a digital input pin for a simple fire-detected / not-detected signal. Adjust the on-board potentiometer to set the trigger threshold for your environment.

Compatibility

  • Arduino UNO / Nano / Mega: Connect AO to any analog pin (A0–A5) and DO to any digital pin. Operates comfortably on the 5 V rail.
  • ESP32 / ESP8266 / Raspberry Pi: The wide voltage range (0–15 V) accommodates 3.3 V logic boards; verify your specific board's analog input specifications before connecting AO directly.
  • Any microcontroller with ADC or digital GPIO: The dual-output design ensures broad compatibility across platforms.

Typical Applications

  • Fire alarm systems: Trigger a buzzer or relay the moment a flame is detected — a classic first project for safety-aware makers.
  • Robot fire-fighting competitions: Equip your robot with the KY-026 to locate and extinguish candle flames autonomously.
  • Smart home safety: Integrate with an ESP32 or Arduino to send alerts via Wi-Fi or GSM when fire is detected.
  • Industrial flame monitoring: Monitor pilot lights or burners and shut off gas valves if the flame is extinguished.
  • Educational projects: Demonstrate analog vs. digital sensor outputs and threshold-based comparator logic in electronics coursework.

Technical Specifications

ParameterValue
InterfaceAnalog (AO) + Digital (DO)
Power Supply0–15 V DC
Spectral Detection Range760–1100 nm (IR)
Detection AngleApprox. 60°
Analog OutputReal-time thermistor voltage signal
Digital OutputHigh / Low logic level
Sensitivity AdjustmentOn-board potentiometer
Indicator LEDsPower supply LED + Comparator output LED
Mounting Hole Inner DiameterApprox. 3 mm
Dimensions (L × W)Approx. 36 × 16 mm
MPNKY-026

FAQ

Q: Can the KY-026 detect sunlight or incandescent lamps and cause false triggers?
A: Yes — sources emitting IR in the 760–1100 nm range (including some incandescent bulbs and direct sunlight) can trigger the sensor. Use the potentiometer to raise the threshold and shield the sensor from ambient IR sources to minimise false positives.

Q: Which output should I use — AO or DO?
A: Use DO for simple on/off fire detection logic (e.g., trigger a relay). Use AO when you need to measure flame intensity or distance, as it provides a continuously varying voltage signal that you can read with an ADC.

Package Contents: 1 × KY-026 Red Plate Flame Sensor Module

⚠ Note: This module is intended for detection purposes only and should not be used as the sole safety device in life-critical fire protection systems. Always comply with local fire safety regulations.
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