Probably the most common cable joiners in the digital video security systems industry are BNC connections. BNC connectors are easy to use and ensure a sound, full contact connection. BNC connections are different than most other single pair wire connectors (such as RCA plugs, for example) plugs, becuase BNC connections are "locked" in place. The following article is about the origin and use (including applications) of BNC Connections.
Nothing provides perimeter coverage in business or residential applications better than an 8 camera outdoor DVR system with DVD burner. In fact, these systems are great for use in just about any outdoor application and with a DVD burner, you can save copies of your video files for archiving or to give to police or insurance companies.