So, it may simply be Microsoft Edge's translation from German to English but the product page seems very un-German like! Very gushy, more like a Chinese page.
Kalkschutzfunktion = Limescale protection - urm what? Why would - how would - the TRV do limescale protection? A bit weird I think.
"real-time behavior" - Hmm, OK. So that must mean that the TRV is always connected to Wi-Fi. How does that match up with the claim to be lower power consumption than Zigbee? I'm not a power expert by any means but that seems to fly in the face of simple physics if I'm being honest. I notice that they do not include any information on expected battery life, they just make an unsupported claim that it uses less power.
"save up to 30% on heating costs" - OK, lets stop now. I've had to deal with far too much hype in my time.
Perhaps my 40+ years of IT and dealing with vendors has made me especially cynical and distrusting of over-promising marketing blurb, but ...
Oh, oh, check out the customer reviews on Amazon:
All of the German reviews seem to be 1-star 
