TFS-Dialog 400 - Advanced Information V02 11/2020
42
Installation
Control with a/b switching modules
Installation
Warning:
Using the wrong door bell transformer could pose a fire
hazard.
–
Only approved intrinsically safe bell transformers according to the
standards DIN EN 61558-2-8 or VDE 0570 T2-8 with a maximum
rated power of 100 W/VA may be used.
This section is supplementary to the installation described in the instruc
-
tions.
Topics
–
Control with a/b switching modules (Seite 42)
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External door opener button and ringer stop contact (Seite 45)
Control with a/b switching modules
Warning:
Improper handling of the device can result in life-threat
-
ening electrical shock, or damage or destroy the device.
–
When connecting an a/b switching module, please also refer to the
safety information and technical data in the a/b switching module
instruction manual.
You can install up to six switchable a/b switching modules, which are
available as accessories, on the 2-core cable between the PBX and device
to implement additional switching functions.