White-Rodgers™ Thermostat, Series: 80 Series, Programmable Thermostat, 45 to 90 deg F Control, RC, RH, C, W, Y, O/B, G Terminal Designations, Heat/Cool/Off System Switching, Auto Fan Switching, 2 Stage, 1 Stages Heat, 1 Stages Cool, 5+1+1 Days Programs per Week, 90% Non-Condensing Humidity, 2.2 sq-in Lighted Display, 20 to 30 VAC, Battery/Hardwired Power Source, White, 6 in W x 1-3/16 in D x 3-7/8 in H, Import