Flame Sensor on Blue Board with LM393 Comparator

The flame sensor module is designed for fast detection of open fire or light sources with a wavelength range typical of combustion (usually from 760 to 1100 nm). The blue printed circuit board measuring 3.2 x 1.4 cm carries a sensitive infrared receiver, an LM393 voltage comparator, a trimming resistor for precise adjustment of the trigger threshold, and LED indicators for power and output activity. The module provides both a digital (discrete) signal and an analog signal, making it easy to connect to microcontrollers for building automatic fire suppression systems and robotics projects. Key features: Product type: flame sensor / infrared fire sensor (Flame Sensor / Fire Detection Module) Specifications: blue printed circuit board measuring 3.2 x 1.4 cm, LM393 comparator, IR photodiode for capturing the flame light spectrum, trimming resistor (potentiometer) for sensitivity adjustment, digital (DO) and analog (AO) outputs, power (PWR) and trigger (OUT) indicator LEDs Applications: detection of open flames and infrared radiation sources, fire alarm systems, firefighting robots and security devices