White-Rodgers 1F85U-42NP Thermostat

White-Rodgers 1F85U-42NP 20-30Vac Hardwire or mV-30Vac Battery, Non-Programmable, 2 Heat/2 Cool Conventional or 4 Heat/2 Cool Heat Pump, 45-99 degree F Setpoint, 80 Series Universal Staging/Heat Pump Electronic Thermostat with Auto Changeover, Dual Fuel Control, and Keypad Lockout

1F85U-42NP is the direct replacement for 1F83-0471