Braeburn 2000 Builder Series 5-2 day programmable, Single Stage Heat/Cool, Large Display with blue backlight.  Compatable with Single Stage Gas, Oil or Electric Systems (Including Single Stage Heat Pumps and Millivolt Heat only Systems). 5 yr warranty AC Power 18-30v AC, DC power 3.0v DC. Control range 45-90 deg F (7-32 deg C)