Low Voltage WiFi Thermostat, Stages Heat 2, Stages Cool 3, Temp. Settings per Day 4, Programs per Week 7, Terminal Designations R,Y1,Y2,G,W1,W2/O/B, C, WiFi Capability Yes, System Switching Auto-Heat-Cool-Off, Fan Switching Auto-On, Display Size 2 in x 2 in, Display Type Backlit, Display Color White, Key Pad Lockout Yes, Programmable Fan No, Automatic Changeover Yes, Humidification Control Yes, Dehumidification Control Yes, Remote Sensing Capability No, Temporary Program Override Yes