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 2925-01-239-6044
NSN 6320-01-119-3935
NSN 5985-01-285-4719
NSN 6240-01-123-0968
NSN 5999-01-161-5370
NSN 5910-01-625-3737
NSN 5930-01-069-0687
NSN
NSN 5935-01-056-5079
NSN 5925-01-586-8104
NSN 7035-01-386-5722
NSN 5975-00-782-4634