Abstract: A thermostat is provided that comprises a high resolution display device and is capable of downloading at least one electronic image file for display during time periods in which the user is not interacting with the thermostat. Some embodiments may download two or more images and alternate between the display of each of the at least two downloaded electronic files. The two electronic image files may be successively displayed as a screensaver during time periods when the user is not interacting with the thermostat. Some embodiments of a thermostat may further be adapted to permit the user to save the downloaded electronic files, and to selectively enter names for the downloaded electronic files or delete the electronic files as desired.