I was very excited for a Smart Thermostat, but have been very disappointed in this product. 1) The online store said my old wiring would be compatible, but it wasn't. I ended up having to run new wiring to get it to even turn on. 2) While the thermostat now 'works' there is little advantage over an old fashioned thermostat as it goes offline every couple of hours, meaning I need to go and manually reconnect and set the temperature