Saving money and electricity is the essential part of using a programmable thermostat. The Energy Star-compliant Edge designer thermostat easily enhances your interior walls while it looks like a super thin digital photo-frame equipped with seven interchangeable faceplates just to suit the setting perfectly. In idle mode the Edge still shows you the indoor and outdoor temperature and the time otherwise it’ll use a flexible program with settings for all seven days of the week with up to four setting each day and of course personalized settings such as your favored level of humidity.