... ST (standard configuration) Relay Contact rating:DC30V@1A Max Fiber link fault and No voltage input ... MMultimode fiber 2KM, one fiber port, connector ST/SC/FC, Rate data: 0~12M.PcsCi-pf120- ... transmission distance: 20KM, single fiber port, connector ST/SC/FC, Rate data: 0~12M.PcsCi-pf120-SSingle ... dual fiber ports, transmission distance 20KM, connector ST/SC/FC, Rate data: 0~12M.Pcs Comark Profibus ...