Fc 51 Ir Sensor Datasheet Here

Search the module name "FC-51 IR sensor datasheet" plus the vendor name or part number printed on the PCB; look for PDF datasheets from electronics suppliers or manufacturers.

However, some variants (or if you modify the comparator circuitry) can invert this behavior. Always test with an LED and resistor first. Fc 51 Ir Sensor Datasheet

The FC-51 has a standard 3-pin male header (0.1" spacing). Beware: The pin order differs between some clones; always check your board's silkscreen. Search the module name "FC-51 IR sensor datasheet"

The module typically includes an IR emitter (LED), an IR receiver (photodiode), an LM393 comparator chip, and a potentiometer for sensitivity adjustment. an IR receiver (photodiode)