It is important to get the right security monitor for your surveillance system. Some DVR's only have a composite video out connection. Usually using a BNC type connector. First Stop Security has a full line of composite in monitors for security purposes. These monitors use either a BNC connection or RCA connection. Be sure and review the specs for each monitor. If you have a BNC connection on your system you may just need an adapter to go from BNC to RCA. You can find those in our CCTV Accessories category under connectors and adapters. We also carry many variations of other monitors including VGA, HDMI, and S type video in connections in many different sizes and applications.