Braeburn® Thermostat, Builder Series, 18 to 30 VAC, 3 VDC, 1 to 3 A, Programmability: 5-2 day Program, Battery, Hardwired Power Source, 1 Heat/1 Cool Stages, 2 sq-in Blue Display, 0.5, 1 or 2 deg F Differential, 45 to 90 deg F Settings, 14 to 140 deg F Storage, 5 to 95% RH Humidity, +/-1 deg F Accuracy, Horizontal Mounting, Terminal Designation: RH, RC, Y1, G, W1, O, B, C, (2) AA Alkaline Battery, Dimensions: 3.62 in H x 4.72 in W x 1.38 in D