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 6145-00-360-7760
NSN 6650-01-505-6947
NSN 6150-00-189-6100
NSN 6620-00-869-7249
NSN 6620-00-403-9649
NSN 6320-01-160-7757
NSN 5915-00-078-9574
NSN 5950-01-210-3070
NSN 6105-00-647-3955
NSN 5915-01-496-3199
NSN 5975-01-616-2105
NSN 5965-00-529-0602