WHITE-RODGERS™ Programmable Thermostat, 80 Series, 30 VAC Battery, 20 to 30 VAC Hardwire, 1.5 to 2.5 A, 50/60 Hz Frequency, Programmability: 5-1-1, 7 day Program, Changeover: Auto, Battery, Hardwired Power Source, 2 Heat/2 Cool Conventional Systems, 4 Heat/2 Cool Heat Pump Stages, Switch Position: HEAT-OFF-COOL-AUXILIARY/EMERGENCY (System), AUTO-ON (Fan), 5 sq-in Universal Display, 0.5 deg F at 6 deg F/hr Fast, 0.75 deg F at 6 deg F/hr Medium, 1.9 deg F at 6 deg F/hr Slow Heating, 0.9 deg F at 6 deg F/hr Fast, 1.2 deg F at 6 deg F/hr Medium, 1.7 deg F at 6 deg F/hr Slow Cooling, 0.9 deg F at 6 deg F/hr Fast, 1.2 deg F at 6 deg F/hr Medium, 1.7 deg F at 6 deg F/hr Slow Heating Pump (Heating and Cooling), 0.5 deg F at 6 deg F/hr Fast, 0.75 deg F at 6 deg F/hr Medium, 1.9 deg F at 6 deg F/hr Slow Heating Pump (Auxiliary) Differential, 45 to 99 deg F Settings, 32 to 105 deg F Ambient, 90% Non-Condensing Humidity, +/-1 deg C Accuracy, Horizontal Mounting, Terminal Designation: RC, RH, C, W/E, W2, Y, Y2, O/B/6, G, L, RC, RH, C, W/E, W2, Y, Y2, O/B/6, G, L Termination, White, Dimensions: 3-3/4 in H x 6 in W x 1-1/8 in D