Honeywell FocusPro Communicating Thermostat, Conventional and Heat Pump Systems and Network Zoning, Heat-Off-Cool-Auto-Emergency Heat System Switching, Auto-On Fan Switching, Up to 3 Heat/2 Cool Stages, 40-90 Degree Heat Temperature Setting Range, 50-99 Degree Cool Temperature Setting Range, ± 1 Degree Accuracy, Auto or Manual Changeover, Premier White, Horizontal Mounting, Up to 9 Zones