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 5945-01-102-4040
NSN 5930-00-514-0582
NSN 6645-01-567-8282
NSN 5920-00-491-9163
NSN 5965-01-425-5857
NSN 5920-01-413-8513
NSN 6240-00-565-9141
NSN 6130-00-309-0852
NSN 6320-01-246-4390
NSN 5905-01-420-8605
NSN 5895-00-335-7443
NSN 6145-01-567-6068