SIEMENS BROTHERS Intercommunication Telephones | |||||||||||||||||||||||||||||||||
INTERCOMMUNICATION TELEPHONES![]() They are available in wall or table patterns fitted with 5, 10 or 15 automatic restoring press button line selectors and a call buzzer. The table pattern is supplied complete with a flexible cord and terminal block. The handset fitted is our high efficiency pattern with immersed electrode inset transmitter ensuring superior articulation with the highest transmission efficiency. A system may consist of one more line than there are press-buttons on the telephones, e.g. telephones with ten buttons may be used to form an eleven-line system with each station having access to ten others. The stations are interconnected by multicore cable and the whole system operates very efficiently over long periods from a single central battery; four cells are normally sufficient where the total length of cable does not exceed 250 yards. An A.C. all-mains unit can be provided in place of the battery, if preferred. The picture shown to the right is the Model 115A/A. The telephones have a plastic base plate and a steel cover.
|
|||||||||||||||||||||||||||||||||
Last revised: November 08, 2020 FM2 |