The form factor of the device you reference, if it is from the same manufacture, is really different than the one I have here in USA, I wonder if that could be a factor.
3rd Reality product I am referring to (link below). Company web site link below that.
I hear your frustration! Hard to understand where your problem is at. You might try a Hue or Ikea plug (if you can be sure that you can return them if no better) and see if they yield different results.
That said, it sure seems like you have some issue that is not surfacing itself.
I am using ZHA, and it’s not showing the exact version. I’ll add two screenshots (basically the same for the two plugs I’m currently using, and which works for two days already)
I guess I’ll get some ikea plugs? Or any other suggestions for cheap and small plugs? I mean, the tradfri is reeeeally ugly and huge. The Hue is at 32€
That’s the US version. I googled for third reality EU smart plug and found these
THIRDREALITY Zigbee Smart Steckdose 4 Stücke,16 A Smart Outlet,Zigbee Repeater,CE-zertifiziert, ZigBee Hub erforderlich,funktioniert mit Home Assistant,Homey,kompatiblen Echo-Geräten und SmartThings https://amzn.eu/d/3BAqYiO
I’m sure they are. Those TS011F-plugs are whitelabeled by many brands. So better keep your hands off of these.
The plugs in your Technikraum and in your Keller are showing the exact same values for LQI and RSSI
Anyway, as routers and with power monitoring I use THESE. They are cheap, playing well as routers with Z2M and they are invisible. But you have to make sure your in-wall boxes (UP-Dosen) are deep enough to accommodate them behind the wall sockets (you in-wall-boxes should be min. 50 mm in depth).
That’s interesting. I could have routers all over the house without them showing on the surface.
I already talked to my electrician and he said he was not sure where they included deep in-wall boxes, and I’m not keen on opening the the outlets myself to check
I don’t know… I bought some more expensive mains and the problem remains.
No connection between these two mains in the image below. It works at first, but they eventually lose connection after a few days and connection never returns.