28 circuits interrupted; w/cover, plastic; operation power rqmt, ac, 10v, 60 cycles, single phase; cam data, 15 rpm and 60 rpm, 1 sec ringing time, 3 sec silent time; 2.250 in. By 3.313 in. By 4.031 in. O/a dim.; plugs into a 21 contact socket
An item which is used with automatic ringing in telephone circuits to provide fixed ringing and nonringing periods. It is usually motor driven.
Classification: Articles designed for connection to telegraphic or telephonic apparatus or instruments or to telegraphic or telephonic networks
NSN 5999-01-155-3690
NSN 2925-00-932-6262
NSN 5930-00-431-2956
NSN 4140-00-274-9638
NSN 5925-00-151-9684
NSN 6620-00-905-6590
NSN 6220-01-462-9321
NSN 5996-01-114-3155
NSN 6320-01-029-4220
NSN 6220-01-469-1822
NSN 6320-01-143-3597
NSN 5965-00-166-3486