... : MM 2Km,SM 20KmFiber interface type: ST/SC/FC Optional, ST Standard. RelayContact rating:DC30V@1A Max. ... fiber 2KM, one fiber port, connector ST/SC/FC (optional), Rate data: 0-10M.Ci-sf120-MMultimode ... distance: 20KM, single fiber port, connector ST/SC/FC (optional), Rate data: 0-10M.Ci-sf120-SSingle ... distance 20KM, connector ST/SC/FC, Rate data: 0-10M. RS-485/232/422 serial to Fiber Optic Converters ...