The lens says "logic power".
A light, with mounting facilities furnished, designed to convey information of a specific nature concerning the circuit in which inserted. Must include or provide for the use of a lens as a part of it. For items without a lens, see lampholder, and also see light (1), panel.
Classification: Electric lamps and lighting fittings, nesoi
NSN 5920-01-441-2286
NSN 5965-01-196-1526
NSN 7035-00-803-3056
NSN 6650-01-580-7478
NSN 6240-01-423-1335
NSN 6220-01-553-9143
NSN 6130-01-461-2039
NSN 5990-00-232-3965
NSN 5965-01-208-6903
NSN 5905-00-095-6532
NSN 5998-01-411-5742
NSN 5935-00-774-3708