BATTERY CALL TELEPHONE
Table pattern, comprising a black Bakelite case with call button in place of dial.
Fitted with an internal DC buzzer.
Cost in 1935 was £4.7.6
Circuit diagram - KS7906.
This telephone requires batteries to operate the transmitter. It cannot be converted to work on an exchange line.
The switch hook springset consists of a make contact set and a change over contact set.
Last revised: October 22, 2022