You've already taken the first step towards enhancing your security by investing in CCTV cameras. The next step is to ensure the cameras are reliably monitoring your premises by protecting them.  Should a fault occur a maintenance policy with 1st Call covers you for the NVR and all cameras.  We carry a large stock of system components in our own warehouse so no waiting for parts to be ordered. Our CCTV maintenance is Monday to Friday 8am to 5pm.