WHITE-RODGERS™ Thermostat, 0 to 30 VAC, 0.05 to 1.5 A, 50/60 Hz, 5-1-1 day Program Programmability, Manual, Battery, Hardwired, 2 Heat/1 Cool Heat Pump Stages, Heat-Off-Cool, EM.AUTO, Auto-On Switch Position, 2 sq-in Blue Display, 0.6 to 1.7 deg F Differential Temperature, 45 to 90 deg F Temperature Settings, 32 to 105 deg F, 90% Non-Condensing Humidity Rating, +/-1 deg F Accuracy, Horizontal Mounting, Terminal Designation: R, C, W2, Y, O/B, G, L, Alkaline Battery, White, 3.8 in H x 4.8 in W x 1.5 in D