Used Tested Condensate Tray Float Switch from a Soleus GL-PAC-08E4 Portable A/C Unit.
Used to detect that the condensate tray is full and shut off the air conditioning to prevent overflow.
YJ-A-37 / 12316037 = Numbers off part.
125/250 VAC 10A 1/2HP Rated Normally Closed Switch.
Possibly used in other similar units?
Scuffs Scratches Oxidation and Wear Tested and Confirmed Working,