Want a better grade of extension cable for your security installation? Swann's In-Wall Fire Rated 50ft / 15m BNC cable is what you've been searching for.
Manufactured to the latest industry standards you can install this cable outside (when protected) or inside. This 'Siamese cable' features integrated co-axial (RG59) and DC power in one convenient roll, so you can easily and reliably extend the range of your camera's video and power signals. Run images from your CCTV camera further without the loss of signal thanks to improved shielding and insulation within the cables. Best of all, the cable is fire rated and can be used in-walls: it has FT4/CMR and UL approval.