WDM Dual Multiplexer and De-Multiplexer (passive) for up to 6 duplex fiber connections, also recommended for interconnecting MediorNet frames. WDM connection with Dual LC Duplex single-mode. The 6 duplex fiber links must be connected via WDM single-mode SFP’s 1310nm/1490nm/1550nm. (SFP modules not included) Insertion Loss max. 6.9dB, Output Loss max. 2dB. Compatible with MediorNet Compact WDM options MN-C-xxx-WDM. SR11 housing for up to 4 modules in one SR-1 module carrier frame. WDM Neutrik QuadCon connection on the opposite side.