Apart from switches, Berker offer a selection of wiring products and functions that can be combined with these frames, such as audio speaker inputs, TV/SAT sockets and network sockets. Contact us for information on other options if you can't find what you're looking for.
Rotary switches can also function as a "double", but only in the slightly old-fashioned "1-way" wiring format. If you need to control two lights with this, check with your electrician/installer that this particular switch version would work for your setup.