Product review (1 stars): Works okay until it doesn't.
My hub ceased to function about a month in. I've been trying to figure out how to ask for a replacement.
Maybe this is how?

Setting up the thermometers is a pain, they are completely anonymous in the list.
Even more so when you have multiple hubs. Because they are anonymous in the list you can't tell which ones are already associated with a hub.
They need to have the user labels from the thermometers on the list with discovery. And show which ones belong to a hub already.

Why the limit of 10 devices for a hub? Seems very artificial.

I'm afraid this is the best system out there, but that doesn't mean it's any good.