... SM 20Km Fiber interface type: ST/SC/FC Optional, ST StandardRelayContact rating:DC48V@1A MaxFiber ... , one fiber port, connector ST/SC/FC, Max Rate data: 1M.Ci-mf120- ... , dual fiber ports, connector ST/SC/FC, Max Rate data: 1M.Ci-mf110- ... 20KM, single fiber port, connector ST/SC/FC, Max Rate data: 1M.Ci-mf120-SSingle ... ports, transmission distance 20KM, connector ST/SC/FC, Max Rate data: 1M. Modbus Plus ( ...