Hey Guys!
Im looking for a zigbee device that will work with HE and will replace my current one (deltadore T-box 117 )described below:
https://www.immergas.pl/produkty,4768/instrukcja-montazu
Above instruction to the product with english description.
Any clue what I can find and use in Europe - Poland?
Thank you in advance
Zbigniew
Might want to look at Sinope thermostats.
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I’ll second that. I changed all my thermostats to Sinopé and never looked back. 
That said, no idea if they can be used in Poland…
I've heard good things about the Zen thermostat (low voltage only, i think) ... just make sure you get the zigbee version. I think they make a wifi version too.