The American Fibertek 404C and 440C Series transmit four channels of high-quality, FM video on one multimode optical fiber at 1300 nm. The 404C Series can be used in applications up to 2.5 Km (1.5 miles). The 440C Series units can be used in applications up to 5 Km (3 miles). For longer distances, consult factory for an extended range 440C-E version. Designed to be completely transparent to all camera and monitor manufacturers, the system requires no field adjustments at installation or additional maintenance thereafter. Diagnostic indicators provide a quick visual indication of system status.