WR1F83H-21NP, White-Rodgers,

Emerson 4.5" Display, Heat Pump (2H/1C) With Dual Fuel Option. Non-Programmable Digital Thermostat; Backlit Display, 24 Volts, System Switch-Heat, Off, Cool, Aux/Emer, Fan Switch-Auto, On, Keypad Lockout, Temperature Limits, Profile-Horizontal, Dual Power: Hardwire And/Or Battery, Range 45-99º F. Terminals-R,C,W2,E,Y,O/B,G,L. Accessories: Wallplate F61-2663 (Sold Separate)