Visual Security has installed numerous different brands of recorders and have come to the conclusion that the operating system is of ultimate importance. This is the software that you will be using to search for events, operate on your phone and control your surveillance system. Some suppliers charge as much as $100 per year per camera for their software. Others charge thousands of dollars for the software. Our VMS comes with the NVR/XVR at no additional cost! Our boxes are from the largest manufacturer of surveillance systems in the world. This costs you a little bit more but guarantees you that your VMS (Video Management System) is state of the art and infinitely up-gradable in the future.