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 6610-00-585-3510
NSN 6320-01-232-4664
NSN 2925-01-380-0869
NSN 5945-01-174-6957
NSN 6320-01-116-9866
NSN 6150-01-456-1934
NSN 5960-00-227-8093
NSN 6620-01-208-1092
NSN 6240-00-110-4497
NSN 5975-01-160-8458
NSN 6320-01-642-2615
NSN 5910-00-862-9334