Many electrical devices continue to use electricity even when they are off. Cutting power at the socket can help to insure this does not happen. These SmartStrip Power Strips sense when power is off to one device (such as a home computer) and cuts the power to devices connected to other sockets (such as printers, monitors, and other peripherals). Also appropriate for use with other electronics such as televisions and associated peripherals (VCRs, DVDs, game consoles, etc...).