Sounds like my experience with Nest last summer. Got the thermostat, can't get it connected to my wireless. Support basically tells me to get bent until I go into full IT guy mode and prove its an issue with the unit. Replacement unit comes, doesn't work at all (first one was at least a nice looking thermostat with no connected features). Third unit comes and it's been fine ever since. For some reason I thought it wo…
The Nest appears to only be a photoelectric smoke detector based on a quick googling right now.
In my house, I have 5 photoelectric alarms that are hooked up to my central alarm system that is centrally monitored. I also have 4 ionization alarms that are hard wired together such that if one goes off they all go off. The ionization are not hooked up to the central alarm system because they have a reputation of having more false alarms. I have never experienced a false alarm in 5 years, but that is their reputation so many experts recommend not making them hooked up to a system that alerts a central monitoring service.
More Info: http://www.nfpa.org/safety-information/for-consumers/fire-an...