I've been reading up on the z-wave switches and possibilities and I've noticed the wife-factor is mentioned many times in different threads. Well in my case, the wife-factor does not want the switches around the house to be a mixture of different kinds/brands and look-and-feels.
Basically this means that I need a solution to build-in behind the existing switches; In my case this one: http://www.berker.com/en/international/ ... ranges/s1/ .
I understand that there are no real Z-Wave "micromodules" available. However am I correct to assume that a Duwi 05431 should work behind such existing switch? (something I believe to have read)
If so, how does it work exactly; specifically C/D and E of below picture:

A- obviously is built inside the wall (keep existing)
B- duwi module - to be added
C- keep existing or replace by the duwi part?
D- existing frame should be used (in my case the Berker one as mentioned above)
E- existing switch should be used (in my case the Berker one as mentioned above)
To keep it simple (to get started) - the switch will be used to control one light. It's the only switch that will control this light.