LuxPro Programmable Thermostat 5/2 Programming (2 Heat - 1 Cool) features Separate Weekday and Weekend Programs (2 or 4 periods/day), Large Display with Back light, Adjust Heating and Cooling Limits, Keyboard Lock, Programmable Air Filter Monitor, Selectable Smart Recovery, Dual Power - 2 AA Batteries Included, User Selectable Programmable or Non-Programmable Operation, Manual Temperature Hold, Temporary Temperature Override, Adjustable Temp. Differential Cycle Rate, Adjustable 2nd Heat Stage Offset Setting, User Temperature Calibration, 5/2 Minute Selectable Time Delay, Battery Free Memory Storage, 2/24 Hour Clock Display, Optional Wall Plate Available.