... Optic to RS232 to RS485, Optic fiber devices, RS-485 Repeater, Series Multi-drop Optic Fibres, Serial ... distance: MM 2Km,SM 20KmFiber interface type: ST/SC/FC Optional, ST Standard. RelayContact rating:DC30V@1A ... -MMultimode fiber 2KM, one fiber port, connector ST/SC/FC (optional), Rate data: 0-10M.Ci-sf120 ... , transmission distance 20KM, connector ST/SC/FC, Rate data: 0-10M. RS-485/232/422 serial to Fiber ...