Lots of people have tried to get the Hue dimmer switch to work directly with smartthings. The problem is that unlike Hue bulbs connected directly to the SmartThings hub, the dimmer switch keeps dropping off the network.
See:
A typical post from that thread:
Unfortunately for me it doesnt work. No matter how many times i add and remove,… after 30 - 60min the connection is broken everytime… really annoying… otherwise the dimmer is perfect for the setup i have in mind.
If you think it’s possible to access the dimmer switch through the bridge so that it could be used as a button controller, I know there are a lot of people who would be very interested in that. I just don’t think there’s a way to get the button presses communicated on over to the smart things hub when the dimmer switch is connected to the bridge.
The problem is that the way smart things currently gets information about a bulb is to query the bridge. The dimmer switch doesn’t have a status most of the time it just sits in a “Ready” state. Then when someone presses it A message is sent to the bridge, but I don’t know anyway to pass that along to the SmartThings hub.
So I would think the same issue would come up with the motion sensor. If it’s connected to the bridge, I don’t think there’s a way to make the bridge tell the hub when the motion sensor is activated. That’s a very different control dynamic than for a bulb.
But maybe its event reports will be visible to SmartThings , it would be great if they are. 