The Furman PL-Plus Series II 8-Outlet Power Conditioner offers advanced and comprehensive transient voltage surge suppression. Furman's proprietary Linear Filtering Technology (LiFT) suppresses AC noise evenly, assuring maximum performance from your system. SMP circuitry offers the highest degree of protection against electrical surges and spikes, and does this without sacrificing itself or any of its components. In addition, the Extreme Voltage Shutdown circuit automatically turns off the unit when it is fed 140 volts or higher, protecting itself and connected equipment from the extreme voltage.