Pag. 19
Technical
General Diagram for a basic door phone installation in a building with one entrance.
MATERIALS NEEDED
In the dwellings
T1, T2, ...Tn CityMax Telephone Ref.: 8044
In the communal interior area
A1 Audio Power Supply Ref.: 8787
In the street
P1 Outdoor panels
Neccesary combination
F1 Electric lock Ref.: 2911
For other types consult catalogue
BASIC FUNCTION
Pressing a determined button on the outdoor panel cau-
ses a call signal Cp1 to be generated by the amplifier and
sent along the call line to the corresponding telephone,
which will then ring with the characteristic tremolo tone.
When the receiver is picked up a switch connects the
telephone with the common audio cables (2 and 6), thus
establishing communication with the outdoor panel.
When the telephone door release button is pressed, wires
1 and 3 of the installation are joined which makes the
amplifier open the door.
SCHEMATIC DIAGRAM
E 1.1 DOOR PHONE SYSTEM
BASIC INSTALLATION
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