The OTR-404 is a compact, cost effective fiber optic extender pair capable of extending up to 4ch’s of uncompressed composite analog video over 30 Km on one SM fiber. It maintains the highest possible quaility of video over the entire 30Km distance. The units come standard as stand-alone units, however, using model OTR-1U-C or OTR-4U-C they can also be mounted in a 1U (up to 4 units) or 4U (up to 16 units) chassis with redudant power supplies. The flexible design of the OTR 30x/40x series makes it the perfect solution for any application that needs rack mounting or stand-alone units. The OTR-404 has an extended temperature range making it a good solution for mounting in NEMA enclosures.