CWDM Multiplexer and Demultiplexer module (passive) with extra low insertion loss for up to 18 duplex fiber connections, also recommended for interconnecting MediorNet frames. CWDM connection with LC Duplex Singlemode. The 18 CWDM duplex fiber links must be connected via CWDM Single Mode SFPs 1271nm; 1291nm; 1311nm; 1331nm; 1351nm; 1371nm; 1391nm; 1411nm; 1431nm; 1451nm; 1471nm; 1491nm; 1511nm; 1531nm; 1551nm; 1571nm; 1591nm; 1611nm.Insertion Loss typ. 2.5dBSR12 SmartRack housing for up to 2 modules in one SR-1 frame. All connections on the same front panel