Abus MODUVIS TVHS20 Serie Manuel D'utilisation page 114

modules connected to the RS-485 can be found under "Intercom" / "Submodules". (Exception:
the security module TVHS10040 does not appear here)
In the menu "Submode", click the "Settings" symbol to assign the apartment numbers.
The submodule ID is based on the ID set via DIP switch on the back of the extension module's
housing. This allows you to easily make the proper assignments when setting up multiple
extension modules.
Attention: After changing the ID via IP switch, the respective extension module must be briefly
disconnected from the cable and restarted.
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