A Video Balun is a device used to adapt the type of connection to allow the use of UTP (Unshielded Twisted Pair) cable to transmit the signals from an analog camera.

Passive Baluns
The baluns that don't require power to work and don't boost the signals are called passive and are used just to convert the signals to run on the cat5e or cat6 cables.
Active Baluns
Active baluns use power to boost the signal and improve the distance the Cat5 cable runs by helping to minimize the external interference.
Depending on the type of active baluns and cable that are used on the installation it's possible to install the cameras around 800m away from the recorder.

1080P HD Active Video Balun		5MP HD Active Video Balun		4CHS HD Video Balun
Model: CAB-H144P		Model: CAB-HD120T/R		Model: CPB-H405C