Excellent apps and Alexa skill. One minor improvement would be the ability to control the brightness of the back light as Honeywell has with some of their other thermostats.
It was difficult to regulate temperatures in our nursery and toddler’s room. We tried partially closing or opening vents in rooms and elsewhere near the thermostat in the hallway, but there would be a noticeable temperature difference in the bedrooms. It was either too cold or too warm with the bedroom doors closed compared to elsewhere in the home.
The T9 Smart Thermostat with remote sensors solved this problem and prioritized bedroom temperature comfort at night. Now everyone in the house has better sleep and we’ve even noticed fewer crying events on our baby monitors. A smart thermostat with remote sensors should be the new standard in every home.
Portability you any location in the house is excellent. Our bedroom temperature is amazingly comfortable now. Great product. I saved money on a technician who I would have used to relocate my thermostat. My thermostat now stays where it was. But I have placed the sensor where I would have relocated my thermostat. All easy steps and DIY. I would recommend this to anyone.
I already had a Honeywell T5 and wanted to get the T9 because of the remote sensor, it was only a matter to pop the new T9 onto the old base without any change in wiring. I waited in anticipation for the setup display to light up and when it did I got a BIG Triangle stating "Factory Test Error". Now I have to send it back and hope the new one works and lasts.