Save costs on purchasing cable as Cat5/6 is cheaper than Coax.
Male BNC Connector to connect directly into the DVR and Camera
Outstanding interference rejection and transient protection
You may need to run additional power cable to power the camera, these baluns do not require power to operate.
Cat5 / Cat6 cable has 8 conductors, use 2 conductors to run video signal. The remaining 6 conductors can be used to run 12Volt power to the camera. Depending on the distance these remaining 6 conductors may not supply enough current to operate the camera effectively hence you may need to run a proper 12VDC cable to run the cameras.