Security 100 Feet Pre-made Siamese BNC Video and Power Cable Ready To Go for Security Camera CCTV Systems (100 Feet/2 Packs, White BNC Video and Power Cable) 100 feet video and power CCTV cable The black cable is made of pure copper and of good quality 2.1mm center positive power connection type Transmit video signals and supply DC power for security camera For camera with DC power only; BNC to RCA adapters