They look good, but still it needs to feed the info to a central smart control system.
The thing then is making it financially worthwhile. I could probably save money with a smarter heating system, but in my case I’m usually home, so many of the benefits are lessened.
My current system is actually very effective for us: we can choose several different temperatures over the day, and it keeps it very close to the target temperature (not within about 5 degrees like the old one). With family spread around the house, it’s near perfect for how we live. So while I do fancy the whole smart system, I don’t think it would actually make much of an improvement.