@agnes.zooz I just had a strange thing happen. I have two of these ZEN 20 power strips. I installed one after the holidays (it had been sitting in my office for a while - Purchased from The Smartest House on 10/1/2018). I used it in my equipment closet for several of the devices that I don't put on a UPS. Two Ink Jet Printers, a Sonos Connect and a Sonos Connect Amp, a Denon Receiver and I used one of the two USB ports for a Google Chrome (audio) device. I just checked my closet and all the circuits except for the USB are off. The buttons on the device don't seem to do anything. The unit is still reporting Energy Time to the log. None of the buttons on the device pages, for either the parent or any of the child devices, seem to be working at all. I checked a few other Z-Wave devices nearby and they are working so it doesn't seem like a hub issue. I tried turning the manual power switch off and back on - that did nothing. I also tried unplugging it and plugging it back in - that also did nothing.
Any suggestions? I am going to be traveling soon so I think I will put an old-school power strip in its place for now . . .
I did a Z-Wave repair and the power strip didn't appear to be cooperating so I did a force-remove (I couldn't get it to do a graceful disconnect, the port 1 button was being ignored). Because the power strip was the nearest Z-Wave device to my hub, I was concerned about the impact it might have on routing. After the force-remove I was able to do a Z-Wave repair (again). It seems to be almost dead . . .