... duplex SC receptacle 2,1x9 Single Fiber Bi-direction; 3.155M, 25km/40km, 4,optical transceiver 1*9 single fiber optical transceiver ... 3/STM-1 compliantApplication: Long haul Ethernet transmissionSONET/SDH/ATMDescription: HFL19-S15-155D-4X transceiver is a series single mode SC ... for wide dynamic range. The transceiver has excellent reliability.HFL19-S15-155D-4X series transceiver is used for Long haul ...