I was digging through my things and found this component (
48-27SD50020222) but am not sure what it is.
I've tried searching for variations of the number
27SD500, etc. but no luck.
Would any of you know?
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The comments are correct. That is an IR receiver. It can be used for decoding IR signals from IR transmitters, such as a typical TV remote. And if I'm correct, if it is paired with an IR transmitter, it can be used for short-range distance detection.