The CCTV is security camera which is used for providing security system in your home. The CCTV camera is used for transmitting signal to the particular place which is place limited area. You need a monitor to view all the video which is broadcasting by the CCTV camera. This broadcasting is not for all the monitors because it provides only point to point broadcasting, if it is connected in point to point mode. You can also use some different mode for broadcasting the videos of this camera which are point to multipoint broadcasting or mesh wireless link.
Mostly people use the security system on the places like bank, account office, airport, casino and the shops. Mostly people use the CCTV cameras in their shop for preventing it from the thief because there are so many people who steals from the shops. The CCTV cameras are also necessary for the home security because now the time when you cannot believes on your neighbors and you need self security. Some time you can see that some neighbors helps the thief in the stealing but you cannot able to catch them due to their covered face or any other reason. Some time may be possible that the thief come to your home when you are sleeping so you will catch the thief with the help of CCTV.
This is the very necessary thing for the safety purpose and also helpful to catch the thief, if your things got lost but you can recognize the face and can complain against that person.