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 5895-00-578-5477
NSN 5975-00-861-6720
NSN 5835-01-584-8538
NSN 5935-01-444-1645
NSN 6130-01-310-2906
NSN 6620-01-411-5750
NSN 6240-01-021-7822
NSN 5925-00-859-7942
NSN 7035-01-073-9424
NSN 6645-01-352-5675
NSN 5975-01-062-2174
NSN 6240-01-187-6878