Low Voltage Thermostat, Stages Heat 3, Stages Cool 2, Temp. Settings per Day 4, Programs per Week 7, Terminal Designations A, C, E, G, RC, RH, S1, S2, S3, SC, W1 (B/O), W2 (Aux), Y1, Y2, WiFi Capability No, System Switching Auto-Heat-Cool-Off-Emergency, Fan Switching Auto-On, Display Size 4 sq in, Display Type Digital, Display Color Blue, Key Pad Lockout Yes, Programmable Fan Yes, Automatic Changeover Yes, Humidification Control Yes, Dehumidification Control Yes, Remote Sensing Capability Yes