Ukelove Energy-Saving Plug-In Timer Switch with 3-Prong Outlet Scientific 24 Hour/7 day Programmable Switching Management For Home, Kitchen, Office Device 1. DAILY PROGRAMMABLE SETTING: Up to 10 periods on/off setting for per 24 hours/7day. 2. ENERGY-SAVING AUTOMATICALLY: Save electronic power and time for your home, office, and kitchen machines, BUILT-IN RECHARGABLE BACKUP BATTERY, which powers the clock display for more than 5 months and makes your programmed timers stay on schedule when power outage. 3. CLEARLY LCD DISPLAY: Show clearly while you managing your device or setting different event with a large LCD screen. 4. SCIENTIFIC MANAGING: Comes with a ON/AUTO/OFF manual override switch, with which you are able to turn on/off the timer before the pre-programmed on/off time arrives. 5. CUSTOMIZING : Customize DAYS/ HOURS/MINUTES according to your preferences. i.e. Switch between Standard time and Summer time(DST)