... ,62.5/125 um,100/140um;single mode 8.3/125 um,9/125um,10/125um Transmission ... MM 2Km, SM 20Km Fiber interface type: ST/SC/FC (optional); ST (standard configuration) Relay Contact rating:DC30V ... distance: 20KM, single fiber port, connector ST/SC/FC, Rate data: 0~12M.PcsCi-pf120-SSingle mode fiber ... fiber ports, transmission distance 20KM, connector ST/SC/FC, Rate data: 0~12M.Pcs Comark Industrial Fibre ...