@truglo Thank you for discussing your findings and your success is encouraging, especially to those of us that hold
our breath every time Home Assistant provides an update to the Z-Wave automation.
I also seemed to always have range issues with the same Nortek controllers as you had.
Related to that, one of the design issues with Home Assistant that I thought was a little short-sighted was that there was
only support for a single Z-Wave controller, which meant that the controller had to be centrally located in roughly the
center of a sphere of Z-Wave devices. That is often not practical with a multi-story home, (In theory, the mesh-networking
design of Z-Wave mitigates the need to have to have the controller centrally located, but I found in real world applications
that several devices in my garage were unreliable and unresponsive, despite having several mains-attached devices
between them and the controller.) It also meant that if you used a small computer like a Raspberry PI, that too would
have be centrally located.
Many of us run Home Assistant in a VM on a server - a headless server in a utility room or basement
location and that really makes the spatial location of the Z-Wave controller a challenge. I decided to
use USB extenders and mount my two USB controllers high on the walls on separate floors:
Maybe time for upgraded controllers!
(In both cases I managed to install the mounting plate upside down relative to the writing on the controller
)
It all works well enough, but the biggest mistake I made is that I bought USB extenders where the POWER adapter is attached
to the RECEIVER, not the TRANSMITTER - essentially the opposite of POE! Here's the receiver on the other side of the wall above
a bathroom cabinet: