Actually, what is probably happening is that the single part of the device which controls the electrical load is the only one that was recognized by SmartThings when you started. That’s the one that is showing is always on.
from the marketing materials, I thought this was using Central scene commands, but it is not. It just has four different end points. Plus maybe the single load control.
http://products.z-wavealliance.org/products/1779/pics
The SmartThings system does not provide out of the box support for that device, but it might work once someone has created A custom device type handler (DTH) for it, although you may not get all of the features that the manufacturer provides.
If this is your first time hearing about custom code with SmartThings, read this overview FAQ:
Then if that sounds like something you would be interested in doing, there will be people in the community who can help you. You would have to have the actual device first. Then you will probably be creating something like the one for the aeon smart strip, which is a pocket socket with 4 receptacles, but is also a multi end point device.
So the device you linked to is not on the official compatibility list for smartthings, and it will not work immediately. But looking at the command sets that it supports, it looks possible that you may be able to make it work if you were willing to work on developing a custom DTH. But nothing can guarantee that it will have all of the functionality that the device manufacturer advertises until you try it and see. This one is going to take some work, because it’s a bit different than anything else that is currently being used.
Some technical notes
My biggest concern, honestly, is that not only does it have four end points, it has 4 endpoints that are using the multilevel switch Commandset, meaning each individual end point can dim. I’m not sure the community has addressed one like that before. Most of the multi end point devices are just on off, not dimmers. Or if they are dimming they are using Central scene commands. This one is multi endpoint and multilevel (dimming).
The problem is going to be if this device requires multichannel association to work. If so, then I don’t think it will work with SmartThings as I don’t believe multichannel association is supported yet on the SmartThings platform. I know it’s supposed to be, I just didn’t know if it actually works without crashing.
@adamv or @Fuzzyligic or @peter.major or @AutomateEverything might have more to add.