Mr. Jeff Burnett is the support representative that call me back and he was super frendley and of a great help. My english was a little uncertin but M. Burnett listen to me verry respecfully. He help me and sended me some email that were verry helful. Its my third house with your product and i am verry satisfeid. Im ordering a new thermostat whit confidence. Thank you and sorry for my french