... .reasonable price,swift delivery PDH fiber optical multiplexer HS-OPT series PDH optical multiplexer ,which is based on ... to point ,link circuit ,loop optical transmission equipment . It can supply 4/8/16/24 interfaces ,one channel ... ST optionaloptical path code1B1Hoptical modulesingle fiber ,duplex fiber ,optionalreceiving sensitivitysuperior to -36dBmoptical power output-8 dBm ~-15dBm RS232 interface ...