Kuman 15A/1800W 24-Hour Digital Timer Socket , 7-Day Digital Programmable Timer Switch with 3-prong Outlet for Lights and Appliances with LCD Display Cycle Programming Function: 24-Hour/7-Day programming, time setting include hours, minutes and day; Up to 10 on/off settings per day. Time And Energy Saving: By automatically turn off the devices to achieve time and energy saving. A good company for you and you electrical devices. 12/24 hour system transformation: Kuman Digital Timer Can easily switch between Standard time and Summer time(DST). Random function model: Have your lights to go on and off at random times when you are away. A good way to keep thieves away. Built-in Battery: To operate the clock with built-in battery help you hold it in your hand to set the timer more convenient. With the internal battery, the unit will stay on work even after a power outage.