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 6110-01-365-4649
NSN 5855-01-273-0927
NSN 6150-01-202-8957
NSN 6110-01-586-2426
NSN 6110-01-134-4103
NSN 4140-01-581-0634
NSN 5910-01-316-7333
NSN 5895-01-183-3596
NSN 5925-01-363-3245
NSN 5996-01-341-0219
NSN 6220-00-163-1183
NSN 6135-01-418-4156