Closed Circuit Television (CCTV) system is the use of video cameras to transmit a signal to a specific, limited set of Monitors. It differs from broadcast television in that the signal is not openly transmitted, though it may employ point to point wireless links, CCTV is often used for surveillance in area which needs security, such as banks, casinos and airports or military installations. A secu[..]

Hidden Cameras are compact in size and are used for secret monitoring. They are usually installed in public place like department stores, theaters, clubs etc. Hidden cameras have a built in recorder that records and broadcast simultaneously.    

IR Day / Night Cameras are used for high alert security area where surveillance needs to happen day and night. These cameras are used by military personals, in parking lots and high security zones.    

A CCTV camera system includes one or more cameras images and audio data to a monitor. Essentially, these camera systems use cameras to transmit the signals to a main hub which when records that data for later viewing or live viewing if you have full time security personnel on your premises.