The PVR 1-Outlet Surge Suppressor module protects the cable input to video/cable/modem equipment against surges and spikes caused by lightning and electrostatic discharge (ESD). It is compatible with cable television (CATV), digital satellite system (DSS), television, video cassette recorder (VCR), cable modem and TV antenna equipment. It is also compatible with many DSS units having operating voltages below 26 volts DC. The PVR is recognized by Underwriter's Laboratories (UL) as a secondary protector.