ERICSSON TELEPHONETypes AB 1200-1220

Magneto Wall Telephones
(All Steel Type)
FRAMEWORK, black enamelled steel.
MICRO-TELEPHONE. RE 4000 (Old No. 532), with cord RS 6000, suspended on a hookswitch.
GENERATOR. For type, number of magnets, and resistance through which the generator rings satisfactorily, see table below.
RINGER. For resistance see table below.
These telephones have enclosed line terminals.
Overall dimensions
Height 20.0 inches
Width 11.0
Depth 6.9
| Type | Generator type | Generator magnets | Line Resistance | Ringer Resistance | Weight (lbs.) |
| AB 1200 | RH 2400 | 2 | 5000 | 100 | 12.35 |
| AB 1205 | RH 3231 | 3 | 20000 | 300 | 13.25 |
| AB 1220 | RH 4450 | 4 | 25000 | 300 | 14.10 |
Taken from the Ericsson Telephone Catalogue 1912
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