I've lived here for 8 years and just discovered this in the closet... It's plugged in with exposed wires, so I'm nervous.
Any thoughts as to what it could be?
@Tripp Thanks!
@ericmann
Best guess is it's doorbell related.
@ericmann That's for ringing a doorbell.
https://edwards-signals.com/index.cfm?pid=104
Part of your doorbell, most likely. Should be low voltage.
@cmdevans Yeah, turned out to be a doorbell transformer. Was unexpected since it was so far from either the button or the bell itself.