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 6620-01-258-7005
NSN 5999-00-259-6020
NSN 6105-01-205-6544
NSN 6110-01-264-9933
NSN 5920-00-280-5082
NSN 5975-01-211-6594
NSN 6620-01-421-3917
NSN 7035-01-579-1694
NSN 6145-00-553-8196
NSN 5996-01-512-4898
NSN 6620-01-461-3550
NSN 5835-01-215-5961