UACC-CWDM-4 Ubiquiti CWDM Mux Demux 4, 1270/1290/1310/1330 nm, SMF-28e, 0.9 mm white LC/UPC, metal 6 CWDM Mux Demux 4, 1270/1290/1310/1330 nm, SMF-28e, 0.9 mm white LC/UPC, metalRack-mountable 4-channel 1270 to 1330 nm CWDM mux demux designed to increase capacity of existing fiber infrastructure.