20 to 30 VAC 50/60 Hz, 0.02 to 1 A Heating/Cooling, 0.02 to 0.5 A Fan, 5.09 Sq Inch Display, Premier White, Horizontal, Battery/Hardwired Power, Auto/Manual, Digital, 5-1-1/5-2 Day Programmable, 2-Heat/1-Cool Heat Pump, 2-Heat/2-Cool Conventional, Thermostat