The 4 channel CWDM passive MUX DEMUX modules deliver the benefits of a Coarse Wave Division Multiplexer in a fully passive solution. With matching MUX/DEMUX units placed at each end of an optical link, up to 4 data channels can be combined and transmitted over a single-mode fiber trunk. It covers all channels from 1270nm to 1610nm in 20nm increments. The HT6000-ODM04 is ideal for increasing the fiber capacity between two sites without the need for installing or leasing additional fibers. The HT6000-ODM04 may be used as a standalone tabletop device or mounted in 1-unit space of a 19” data rack. It can achieve bi-directional 4 ch multiplexing and demultiplexing. The complete passive solution requires no power cabling and no configuration; it is a true plug and plays solution.