* 20 m length * DC/RCA connector * bus cables * copper cables Discription:this is extension video cable on bus,truck,van,caravan ... etc, it is with RCA connector for normal video input/output, and with DC 12v connector for power , the length is ... ,20m optional.Extension video cable feature: * Extension cable with RCA connector* DC power,video/audio female connector* DC power,video/audio male connector ...