This extension wire bundle will increase the range of your Defender compatible cameras. Now you can expand the potential applications of your video security system. Connect them to your existing 4 PIN DIN wires to extend their range by 60 feet each and allow more freedom in the placement of your cameras. For use with all Defender Security Systems. Includes 4 x 60ft 4-pin DIN (female to male) wires. For questions or concerns regarding this product, please contact the Manufacturer"s Customer Service Department at 1-866-946-7828, press 1 for customer support. In order to maintain image quaility, connecting more than 120ft of cable to one camera is not recommended.