4 Pcs Coaxial Surge Lightning Protector/Surge Suppressor -For Protector Satellite In-Line, Cable Box, Distribution Amplifier - 75 Ohm 5-2400Mhz Home Cable TV Lightning Arrestor[Safety and Security]: If your home is in a place where there are many thunderstorms, you can prepare a few more surge protectors. Lightning strikes or unexpected power surges can cause damage to set top boxes, TVs and other expensive equipment. Using this high quality and inexpensive surge protector can effectively reduce the damage. [Coaxial cable surge protector]: If you own your own modem and don't want to risk anything happening to it (if it's