This document provides information about CCTV camera systems and the different types of CCTV cameras. It defines CCTV as using video cameras to transmit a signal to a limited set of monitors for security monitoring purposes. The document outlines the basic components and function of a CCTV system and describes common indoor and outdoor camera types including dome, bullet, and hidden cameras. It explains that CCTV is widely used to monitor and deter crime in businesses, homes, and other secured areas.