I think it wasn’t necessary buying extras, it the AC works exactly the same ways as if I didn’t have any, furthermore if you think you are going to be able to have different temperature in the rooms that’s a big no. Don’t buy any extra sensor when you get the T9 “smart” Thermostat.
Overall I am pleased with features of this thermostat. App is easy to use. Only thing I wish they would add is a feature to let the thermostat drop or rise an extra degree to keep the system from short cycles.
Versatile solution for any temp. control situation
on August 3, 2022
Posted by: JBJB
Frequency of use:Daily
Gender:Male
Verified Purchase:Yes
Super helpful for non-traditional temperature control situations because you can override the detected connections and it will operate as if it has a Y1 or W1 wire for heating and cooling.
My unit had been on the shelf since 2019. It needed an update as it would not recognize my home WiFi. Had to leave it hooked to my cell phone hotspot for two hours to update, then was able to hook to home WiFi.
The extra hour I was billed by the heating and cooling company trying to figure this out really stung.