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3. Connect the bell buttons. The maximum
cable length is 2 m.
4. If necessary, connect additional compo-
nents from the door communication sys-
tem via the "System" or "Video" slots.
Do not connect "0" terminal
When using an add-on module, the "0" ter-
minal of the built-in loudspeaker may not
be connected to the "0" terminal of the add-
on module.
i
Illumination of bell buttons
The illumination of the bell buttons cannot
be supplied via the bus system of the door
communication system.
Use an additional power supply for the bell
button illumination.
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