The video modulator is marked "To TV Receiver VHF Terminal" in the top left corner. There is also a switch which can be adjusted from "Modulator" to "TV Antenna." There's a red protection light which signals if the video audio DC supply is on. There are two metal screws on the side and a connector extending from the top with two spade connectors. At the bottom there is a cable ending in a 5-prong DNC connector that measures 91.125 inches. There are two Velcro pieces on the back.