Perfect Vision PVSE10 Antenna Cable TV Surge Protector In-Line inline Coaxial Plugs into Coaxial Line Protects CATV Converters, Decoders, Satellite TV Receivers, DVD Players, Video Recorders and Televisions from Lighting, Surges, and Spikes. Safe and Reliable to protect your receivers 5 - 2300 MHz In-Line Coaxial Gas Tube Lightning Surge Protection Transparent To Analog/Digital Bi-directional Signal Transmission