I replaced all my thermostats for both of my homes with Sinopé products. Smart, allows integration with locally hosted home automation, and compatible with ZigBee networks. Purchased my first batch in late 2021 and haven't had any issues. Physical temperature controls if the LAN goes offline. Highly recommend.
Here's the hardware installed for on-prem home automation using the open-source Home Assistant software:
* Raspberry Pi[1] CPU, heatsink, A/C adapter, and case
* ConBee II Zigbee USB gateway[2]
* USB ADATA Micro SD card reader and USB cable
* Micro SD card (for operating system and Home Assistant)
* Ethernet cable (optional if using onboard WiFi)
There's a tutorial walking through the setup:
https://www.youtube.com/watch?v=GJEwrSSFe9s
It takes a little more labour to make it remotely accessible via smart phone, but once you have it locally hosted, that world is your oyster.
[1]: https://www.raspberrypi.com/products/raspberry-pi-4-model-b/