This document provides information about CCTV/security camera systems and their components. It discusses digital video recorders that compress and store video from analog cameras. CCTV systems can include dome, bullet, covert and PTZ cameras. Other key components are monitors for viewing footage, networking equipment for internet access, power supplies, and accessories like cables, connectors, splitters and microphones. Installation requires selecting cameras and a recorder based on the wiring and connecting all components with the proper cables.