Hi,
My building uses thermostats by Telkonet. More specifically the Touch Combo model (Smart Thermostat Touch Combo | TELKONET). Apparently they have bluetooth, zigbee and wifi. I believe they are centrally managed by our building, but they can also be remotely managed by the end user via a very rudimentary web interface at https://rhapsody.telkonet.com. They also have an Android and iPhone app (https://play.google.com/store/apps/details?id=com.telkonet.rhapsodymobile.thermostat&hl=en_US), but currently doesn’t seem to work.
I was curious if someone else also had this thermostat and found a way to integrate it with Home Assistant.