All Teufel Home Series products incorporate the AirPlay 2 protocol, which can be configured for multiroom systems to allow the same content to stream to multiple speakers at the same time. The use of AirPlay means that you are no longer bound to one manufacturer, and can create multiroom systems using any speakers that support AirPlay 2.
In order to setup an AirPlay multiroom system, you will have to dynamically group the AirPlay-ready speakers you plan to link together. Click the following links for guides from Apple for how to do that: