Smart home - Sense and nonsense - Possibilities - Plans and projects

But at first I also didn’t see that the OP’s real goal was to preach KNX rather than gather opinions as stated in the first post. I only noticed that through the parallel KNX post and the reply ;)

Well, you are on the wrong track there...

No one in the KNX corner is interested in more practical and cheaper solutions

Of course, one of the advantages of open standards like KNX is also the ability to bring everyone together... but most don’t understand that...

And I can only repeat myself once more, whoever sees information and enlightenment as a mission is only looking for confirmation of their preconceived (unrealistic) opinion.

Has anyone gained experience with Somfy products (control of roller shutters and venetian blinds)?

Is there a good, nice surface-mounted presence detector that can be installed "on the surface" under a concrete ceiling?

Unfortunately, we have so much reinforcement and pipes in the ceiling that I cannot install/drill a flush-mounted box there.
A conduit is already in place and KNX cables are already there as well.
Has anyone implemented this or has experience with surface-mounted presence detectors?

Alternatively, I could install 2 detectors on the walls instead - although this does not look so great.
Are there possibly any experiences with this?
Unfortunately, MDT only offers motion detectors here.

MDT also has presence detectors and I also believe a surface-mounted design.

MDT also has presence detectors and I believe also a surface-mounted version.

I meant the wall version.. There are only motion detectors there

I don't really like the ceiling parts from MDT..

For the Merten Argus, there is a surface-mounted housing for such a case.