We had some older Resideo Thermostats and replaced them with new ones and added an additional one for our basement. The thermostats work well and we like the additional features they have in the newer models
I used to work for Honeywell Commercial Building Supply back in the 90’s where temperature averaging units were a standard installation. Finally they are available to residential applications to ensure the whole house gets even temperature control for pleasant comfort.
The T9 is easy to setup and control. Remote operation and monitoring are simple and accurate. Honeywell T series is my personal choice for my remote thermostat.
The T9 with a sensor in my bedroom will not connect unless i am in the bedroom, which is upstairs.The rest of the house is connected to a Good Honeywell Thermostat,which controls all the rest of the home. I installed the T9 Thermostat in 2022. And I have installed 7 T9 Thermostats in my complex up until last year.
Setup and use is easy but the geo fencing seems to be very hit or miss when tracking my wife's phone. This means if I leave the house it will turn the system off even if my wife is still home.