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 6650-00-172-7519
NSN 4140-01-597-4788
NSN 6320-01-414-4568
NSN 6135-01-463-2445
NSN 5998-00-244-5242
NSN 5935-00-232-0354
NSN 5985-00-434-0116
NSN 6320-01-259-2604
NSN 5930-00-074-3265
NSN 5998-01-438-3285
NSN 5915-00-274-2282
NSN 6105-01-385-5162