Programmable, Outlet Thermostat, Programmable Features For Most Space Heater and Window Air Conditioning Units, Pre-Programmed: 4 Periods Per Day, Temporary Override and Manual Hold, Selectable Fahrenheit/Celsius Setting, Adjustable Temperature Swing, Differential, Separate Programs For Heat/Cool, Easy To Read Display For Time and Temperature, Easy To Use, ETL Approved, 120V Outlet Power: Includes 2-1.5V G13 Alkaline Button Cell Batteries For Clock, For Use On: Electronically Controlled 120V, 15A, 60Hz Window Air Condition Units With Auto Restart Of Cooling.