Elecrainbow&reg; 7-day LCD Programmable Plug-in Digital Timer Switch with 3-Prong Timer Outlet for Home Lights and Appliances - 120V/15A/1800W Energy saving by controlling indoor and outdoor lights and appliances systems Convenient plug-in design; Built-in rechargeable battery backup; Large LCD display Random vacation setting allows your lights to go on and off at random times during absence; Settings automatically backed up in case of power failure; Easy to read, install and program Switch between Standard time and Summer time(DST); 24-Hour/7-Day Programming Setting; 12-hour/24-hour Interchangeable Format;8 Function Keys; Up to 10 on/off settings per day Perfect for turning lamps, fans, sprinklers, lights, hydroponics, illumination, heat, A/C and other electronics devices on and off automatically