The Patton EPG Model 542 and 543 video surge protectors connect in-line between the coax video cable and the connection port on your camera(s), console or other piece of video equipment. Transient surges are then intercepted and diverted to ground through a braided metal strap. Our video protectors can handle repeated surges up to 1,500 Watts per wire. Their "fail safe" design protects your video equipment even in the event of a severe surge. The Model 542 comes with one male and one female BNC connector. The Model 543 is equipped with two female "F Series" connectors.