WR1F85U-42PR, White-Rodgers,

Emerson 80 Series 5" Display, Universal Single Stage, Multi-Stage (2H/2C) Or Heat Pump (4H/2C) With Dual Fuel Option. Program Choices: 7 Day, 5+1+1 Day Or Non-Programmable Digital Thermostat; Backlit Display, 24 Volts Or Millivolt, System Switch-Heat, Off, Cool, Auto Changeover, Aux/Emer, Fan Switch-Auto, On, Keypad Lockout, Temperature Limits, Profile-Horizontal, Dual Power: Hardwire And/Or Battery, Range 45-99º F. Terminals-RH,RC,C,W/E,W2,Y,Y2,G,O/B/6,L. Accessories: Wallplate F61-2663 (Sold Separate)