Fiber optic patch panel with a built-in CWDM multiplexer and demultiplexer, terminated in SC/PC connectors. Passive CWDM units are a reliable and reasonable method for transferring several wavelengths/signals over the same fiber (wavelength multiplexing). 2 x 8+1 channel CWDM, SM, 1471-1611/1260-1458, SC/APC