For any small- and medium business, shopping centre complex and corporate office environment, it’s imperative to have a complete set of CCTV security camera systems installed on the premises. Before you consider purchasing a CCTV security camera system, you should ask yourself a series of questions: how many CCTV cameras do you need, for how long do you need to keep the video files, what type of physical protection do you need for the cameras, will the cameras be monitored live, or only played back if there’s been a problem? Only once you answer a set of questions will you comprehensive idea of the kind of security camera you need.