Use of this power strip will pay for itself in saved electricity costs in about three months. Plug in your TV or computer into the primary receptacle and the peripheral appliances such as printers, DVRs, etc. into the other receptacles. This strip will automatically turn the peripheral appliances off when the TV or computer is shut down. Many people don't know it, but all of these peripherals draw power all day long, even when not in use. It's time to turn 'em off!