Our 4 channel UTP Transceiver has 4 x BNC video connections and 1 X RJ45 connection. You can connect the pairs individually on the screw terminals or using a standard RJ45 jack. This device will convert up to 4 cameras using BNC connectors to a single CAT5 for distances of up to 1200 feet. Then with a second 4 channel video balun you can convert the video back to BNC. This is the ideal solution for running several cameras to a similar location on a single cable. Additionally, by using CAT5, you will be able to upgrade your system to network cameras in the future by simply removing the baluns and using the existing CAT5 for ethernet.***Please note these are sold individually, NOT in pairs.