The KY-026 Flame Sensor Module is a sensor designed to detect fire or other light sources in the wavelength range of 760 nm to 1100 nm, which corresponds to the infrared (IR) spectrum. It is commonly used in fire detection systems, safety projects, and various electronic applications where flame detection is necessary.

Key Components and Features

1. IR Flame Sensor: The core of the module, sensitive to infrared light typically emitted by flames.
2. Comparator: Often a LM393, it processes the signal from the IR sensor to produce a digital output.
3. Digital Output (DO): This pin goes HIGH when a flame is detected and LOW otherwise.
4. Analog Output (AO): Provides an analog signal proportional to the flame intensity.
5. Adjustable Sensitivity: A potentiometer on the module allows the adjustment of the detection sensitivity.
6. LED Indicators:
   • Power LED: Indicates the module is powered on.
   • Signal LED: Indicates the presence of a flame when it is lit.

Technical Specifications

• Operating Voltage: 3.3V to 5V
• Detection Range: 0 to 1 meter (varies with flame size and sensitivity settings)
• Spectral Range: 760 nm to 1100 nm
• Dimensions: Approximately 32mm x 14mm x 8mm

Pin Configuration

• VCC: Power supply pin (3.3V to 5V)
• GND: Ground
• DO: Digital output
• AO: Analog output

Applications

• Fire detection systems
• Safety and alarm systems
• Gas leak detection (to detect the flame of burning gas)
• Educational and hobbyist projects