Abus MODUVIS TVHS20 Serie Mode D'emploi page 132

If you do not use the call button for the main video module and seal it with a cover plate, you will
need to configure the extension module TVHS20020(S) via the ABUS CMS software. All
extension modules connected to the RS-485 can be found under "Intercom" / "Submodules".
(Exception: the security module TVHS10040/TVHS20340 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.
130