The CATV 3-Port Through Outlet (Part number: DKT MM-10-65D-FP) is a Coaxial Outlet . Outlets are a square shape box with one or more sockets. These terminal points of coaxial cables, are usually fixed to walls where they are next connected directly to the customer's television or cable box. They can be intermediate or termina. The intermediate taps keeps transmiting the signal to another room, while terminal taps terminates the instalation.