Wired Security Cameras That Use RJ11 Cable
By Richard Asmus
Security cameras come with several connector options for different types of cable. A BNC or RCA connector uses coaxial cable, an RJ45 connector uses four-pair cable and an RJ11 connector provides the lowest cost connection with three-pair telephone cable. RJ11 security camera options include black and white or color, fixed or movable and indoor or outdoor. Some include night vision.
The Samsung SSC-17C offers a black and white video signal that connects to the security system switcher with a single three-pair cable with RJ11 plugs, which carries the video signal to the switcher and also carries 12 volts from the switcher to the camera. It does not connect directly to a monitor and must be used with a compatible switcher. The lens and camera body are fixed and cannot zoom or change positions. The SSC-17C is compatible with the Samsung SSC-17 security system.
Mace Easy Watch EWC-IRB-RJ11
The Mace Easy Watch EWC-IRB-RJ11 adds night-vision and color to your security system. The automatic infrared system illuminates objects up to 15 meters away. It has a built-in microphone and works with Samsung and CoviSec switchers and multiplexers. It connects with RJ11 three-pair cables to link video, audio and power. The weatherproof housing allows indoor or outdoor installation with a locking swivel mount to help in aiming.
Samsung SOC-D120 RJ11
The Samsung SOC-D120 Indoor Color Security Camera mounts in a dome to improve appearance and allow easy positioning. Made specifically for indoor use, it mounts flush on a wall or ceiling but does not include a microphone or night vision capabilities. It has a wide-angle lens with a focal length of 3.8 mm to allow broad video coverage. It uses a single three-pair cable with RJ11 plugs to carry the video signal and the 12-volt power.
Switcher and Multiplexer
A video security system that uses RJ11 connectors usually comes in a kit with cameras and a switcher/multiplexer to connect to a monitor. The switcher section selects which camera image appears on the monitor. The multiplexer section allows multiple camera images to appear at the same time in divisions of the screen. For example, it can display two cameras' images in halves or four cameras' images in quarters. Advanced multiplexers allow up to 16 cameras to appear at once and include a digital video recorder.
Richard Asmus was a writer and producer of television commercials in Phoenix, Arizona, and now is retired in Peru. After founding a small telecommunications engineering corporation and visiting 37 countries, Asmus studied broadcasting at Arizona State University and earned his Master of Fine Arts at Brooklyn College in New York.