... 4.with ISO9001,CE,RoHS,UL certificate SFP-OC48-LR1 third party SFP module, excellent performance, with 3 years ... free warranty, competitive factory price.Applications1.SDH STM-16 and SONET ... kinds of compatible optical transceiver modules, including SFP, GBIC, SFP+, XENPAK, X2 , XFP, BIDI,CWDM,DWDM and other special transceiver modules. ...