The standard for analog CCTV security systems. Siamese cable provides separately insulated wires of power cable and coaxial cable. A single coating usually attaches these two wires.

This allows proper power to be delivered without interfering with the video transmission:

Coaxial cable to connect the camera to the display.
A power cable to give the camera power.
While siamese CCTV wires are the general standard, they have both advantages and disadvantages.

The added powerline simplifies your installation, so you don’t need to worry about additional power supplies and cables. They have a good signal, are reliable, and last a long time.

Since both cables have separate insulated cable jackets – it protects them from crosstalk and electromagnetic interference
Rj6 cable
Has a heavier gauge wire to make it extra suitable for video. The cable benefits from thicker insulation with shielding layers that slow down video degradation over the cable run.

RG6 cables are the go-to choice for higher definition camera systems.

With more expensive, high-res equipment, you want to ensure that your CCTV cable type doesn’t limit the quality you might otherwise obtain.

One thing to note: If you get an RG6 cable, you will also need an 18/2 low voltage wire for your power.