It appears this HMSZB-110 is either faulty or they just don't work correctly.
My first pairing of it with deCONZ seemed fine, the various clusters could be read and triggering things like "identification" (flashing the LED) worked fine. Subsequent pairings seemed to show the same results that were observed on the HE, an inability to respond to commands that were sent after the initial discovery. Couldn't read clusters, etc.
I haven't sniffed the traffic here at all, it seems pointless if deCONZ also cannot get a response out of the thing a lot of the time. I'm going to send this back and ask for a replacement just in case this single item is faulty, and I'll update this thread with more information once the replacement is here.
