This is a 1 channel CWDM optical add-drop multiplexer 19in rack mount with LC connector . This unit can be used as either a multiplexer or demultiplexer (mux/demux), and is a plug and play system. This OADM supports wavelengths between 1260nm and 1620nm, and can be customized among a variety of CWDM channels. Our mux/demux products are 100% compliant for all of your networking needs. Now you have a 100% compliant and a cost effective solution to your network upgrade needs.