RG59 PLENUM Siamese CCTV cable allows cable installers to run both the video and power to security cameras using just a single cable run. RG59 is cut by you or your installer to the exact length that you need for each CCTV Security camera run. The RG59 portion of the cable is COAX and is used to run the video signal to the security camera. The 18G/2C pair is used to run the AC or DC power to your cameras.