The device constantly goes offline. I purchased a second lyric for my upstairs and it took me 4 days to register the device in my account. I spent countless hours trying to register it over and over again. Too many bugs. I bought an ecobee instead.
Figuring out how to use it with WiFi took a little time as the directions did not seem very clear to me. Once I figured it out, I have been very pleased with the way it works