I already saw the Switches from fibaro. But they say that the depth of the wall box must ≥ 60mm. But mine is only 45mm. Do they fit nevertheless?
Do you have experience with this switches?
There are also tons of zwave switches to choose from which might work if your boxes are too shallow for the models. I have one from Linear that I chose because it allowed me to change the face plate and button to a different color so it would match my other switches. But there are plenty to choose from from GE, Fibaro, Linear and others.
As sihui mentioned the zwave-Switches from fibaro works great. I use the dimmer and rollershutter switches too.
You can send commands to other z-wave devices directly or handle all inside of OH with rules (I prefer this one).
Only the dimension of the device do not fit behind my exisiting switches. This is mentioned too here in the post. But I have a hammer to extent the space behind the switches. No big deal.