24V, 4 Program, Wi-Fi, Programmable Thermostat, For Everyday, Wi-Fi Enabled Via Smartphone Or Computer, Free App, Smart Response Technology, Programmed With Energy Saving Schedule, Permanent & Temporary Hold Options, Single & Multi-Stage Heating & Cooling, Heat & Cool Only, Central Air Furnace, Warm Air, Heat Pump With & Without Auxiliary Heat, Hot Water Steam Or Gravity, Gas Fireplaces.