There's another thread on this, if you search for Zen, you should find it, Essentially, the Zen26 and Zen27 are very "Chatty", particularly the 27, and send too much traffic on events.
I'm using 26's right now, using the same Generic Zwave driver you reference, but I'm holding off on the 27, hoping that Zooz makes them less promiscuous in their messaging traffic....
S.
Heres the Thread: Light not turning completely off
