1.4E1/8E1/16E1 fiber optic multiplexer 2.RS232,1 channel service ... Optical fiber interface 1.fiber type : single mode fiber ,muti mode fiber ,optional2.wave length : 1310nm,1550nm,850nm,optional3.optical fiber interface : SC,FC ... ,ST optional4.optical path code : 1B1H5.optical module : single fiber ,duplex fiber ,optional6.receiving sensitivity ...