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 6145-01-444-4509
NSN 6320-00-368-2803
NSN 5920-00-916-3902
NSN 6685-00-108-6374
NSN 5945-01-019-6922
NSN 5935-01-274-4162
NSN 6620-01-344-6074
NSN 6610-00-891-6370
NSN 5999-01-519-0760
NSN 6240-01-482-4819
NSN 5930-00-830-3187
NSN 6135-00-862-5736