UEB 7-Day Digital Plug in Programable Timer Swich Wall Energy-Saving Socket Outlet with LCD Display for Lights and Other Household Appliances 24-Hour/7-Day programming; Up to 10 on/off settings per day; Built-in battery backup Saves energy by automatically turning lamps, fans, christmas tree lights and other electrical devices on and off Comes with a convenient manual override switch and an easy-to-read large LCD display Features a random setting to have your lights to go on and off at random times during your absence Can easily switch between Standard time and Summer time(DST); Interchangeable 12-hour/24-hour format