Non-Programmable Easy-to-See Classic Round Style Manual Changeover Thermostat, 1-Heat/1-Cool Conventional, 1-Heat/1-Cool Heat Pump, Voltage: 24, Temperature Range: 50F to 99F, Power: Hardwired, Battery, Color: Premier White, Applications: Conventional Systems, Heat Pumps with No Auxiliary Heat, Features: Sensor Element Thermistor, Manual Changeover, Dimensions: 3-20/29''H x 3-20/29''W x 1-1/11''D, Weight: 0.32 lbs