CCTV
CCTV stands for closed-circuit television. ... CCTV systems that use analog cameras have been around for years. They are still the most common type of camera installed in the field, experts say. Picture a camera or series of cameras with a dedicated set of wires fed into a recording device and series of monitors.
CCTV systems are primarily used for security, monitoring and surveillance purposes. In terms of security, CCTV can be used to monitor both public and property security. For monitoring and surveillance purposes, CCTV can be used to for investigation or crime prevention.