The closed-circuit television or CCTV means the use of the video cameras that transmit a signal to a certain place in a closed loop, with absolutely no access from the outside of the system. A surveillance system is exactly what the name says: oversees. So what can you monitor?

CCTV cameras are great for surveillance in zones such as commercial establishments, office rooms, restaurants, parking lots, and private homes. They are used to monitor the movements of employees, tourists, nannies. They are used to protect important things such as vaults, safety deposit boxes, and other areas the may need an observer.

Along with technology development and transition to digital, system costs have fallen considerably. The main criteria for qualification and types of video surveillance systems are:

- Types cameras based on position: indoor and outdoor – Interior room types: miniature, hidden, box, bullet, dome, IP – Types outdoor rooms: box, bullet, dome, wireless – Rooms based on lens types: Wide-angle (large angles) and normal – Room types based on sensor: CMOS, CCD, color, black & white

How does it function?

Information is registered through the CCTV camera then transmits it to the server. The purpose of the server is to collect and save the data gathered. It can also be used to display them instantly on the screens. The system can also be connected to the internet for portability. DVR’s or commonly known as Stand Alone Digital Video Recorders may be used depending on the needs and the system.

Completing the connection to accomplish the transmission from the server

Method 1: UTP Cable Method 2: coaxial cable Method 3: Wireless Method 4: Fiber Optic

The decision should to be taken depending on the available budget.

Where does it operate ?

It can be installed inside and outside. CCTV cameras that are used outdoors should be more resilient than cameras that are indoors. Some cameras are may see in the dark through the use of infrared.

The orientation of the cameras is crucial to the effectively see the full area under surveillance. The angles must be correct. The right power supply to use. Figure out if the camera needs movement whether vertical, horizontal or both. Calculate the optimum distance. All these small details are needed when installing CCTV cameras.

The CCTV camera is IP based and thus it is using a 32 bit number that is unique and that works like a network address. The cameras will be connected through the network and they can be accessed from all over the world for the reason that they have a globally unique IP address.

Digital CCTV cameras produce high quality images and can be stored in portable disk drives. Through this, the files will never be degraded in terms of quality. Analog systems are susceptible to interferences and damage. The search method is sophisticated and does not work in analog systems. The one that control CCTV systems is software based so that data are accessed instantly.

One of the most important advantages of the CCTV IP cameras is the ability of viewing the images practically anywhere in the world. This will offer you the needed peace of mind at the time you are away from your home. You can check up the house anytime you want with just some simple clicks.

With further technological developments, CCTV in the future will certainly have many uses and will be used on a greater scale. Its implementation in mega cities paved the way to gaining worldwide recognition. London for example greatly benefited from this system. CCTV cameras are highly adaptable in different environment and there is no wonder why security manufacturers will involve it in many projects and developments. CCTV systems and hidden cameras are very important in homes for protection and safety of all those who you love. Investing in CCTV cameras are better than to suffer the consequences of having none.

A hidden camera offers important choices in reaching covert surveillance. Hidden cameras are popular tool and will continue to be a best choice.