The 4-Port HD-TVI Video Balun from Speco Technologies supports HD-TVI resolutions up to 5MP and HD-TVI signal extension up to 820' over optional Cat 5e/6 cabling (depending on resolution and cable quality). The balun also supports AHD, HD-CVI, and standard analog signals. Key features include built-in ESD, EFT (impulse noise), and transient protection.