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 5835-00-302-5296
NSN 5950-01-556-7989
NSN 6645-01-056-5291
NSN 7035-01-052-3815
NSN 6240-01-590-1347
NSN 6220-01-570-2197
NSN 5975-01-180-3761
NSN 5960-00-170-6447
NSN 6685-01-205-2385
NSN 6220-01-150-3128
NSN 2925-01-519-6726
NSN 5996-00-851-1984