White-Rodgers 1F85U-22NP Thermostat

White-Rodgers 1F85U-22NP 20-30Vac Hardwire or mV-30Vac Battery, Non-Programmable, 2 Heat/2 Cool Conventional or 2 Heat/1 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-22NP is the direct replacement for 1F83-0422