CCTV is the acronym for Closed Circuit Television. The expression “Closed Circuit” means that it is an installation of directly connected components, which create a circuit of images that cannot be seen by another person outside of it. And it differs from the broadcast of ordinary television signals in that they can be seen by anyone with an antenna or other equipment to receive them, while the CCTV does not.
CCTV is customized to adapt to nature and security needs of each client. The ideal CCTV systems should provide good quality images by day and night, it should also be easy to use and flexible, to record images that serve as useful evidence and help analyze incidents. If the images don’t have quality, then it will be of little use.
How does a CCTV camera system work?
There are many systems of CCTV cameras available, analog and digital, with and without cable, and their ways of operating vary. However, the basic components are basically the same: CCTV cameras, a CCTV lens, a CCTV monitor and (for wired systems) the cables that carry the signal from one site to another.
The received images are sent to a CCTV monitor and recorded. Depending on the lens, the camera may have a range of vision. The camera picks up the signal from the area being monitored, and in wired systems, the CCTV camera sends the signal through a coaxial cable to the CCTV monitor. In wireless systems, the camera emits the signal without needing cables. The monitors can be observed by qualified personnel or not be monitored in real time by anyone.
Recent advances in technology and software make it possible for many recorders to now be equipped with motion recording or incident reporting. With motion recording, devices will only record when CCTV cameras detect movement. This saves storage space in periods of inactivity. The notification of events consists of the process of sending text messages, telephone or emails when activity is detected.
This is particularly effective for teams without human supervision. The recorded information can be stored or viewed by those with access whenever they want. Many of the current recorders also have an Internet connection so you can access the images remotely with a computer or even a mobile phone.
A multi-camera CCTV system?
Most systems today consist of more than one camera, but you do not need a monitor and recorder for each of them. Several CCTV cameras can share a monitor and hard disk. There are teams that for example separate the screen in four to see four images, or that allow choosing which camera you want to watch. However, the most common way to control several cameras is with a multiplexer, which incorporates the previous services with a code, with which you can then see the camera you want knowing that code.
Who needs a CCTV video surveillance system?
CCTV systems can be found almost everywhere today. You’ve seen them in shopping malls; building exteriors, football stadiums the list is endless. And a CCTV camera system is becoming increasingly common in domestic situations. CCTV systems are no longer a luxury, especially considering the level of security they provide.
The commercial sector can be used for different purposes, for example, to have evidence of an incident or to fight against fraudulent complaints.
What you want and what you need
These days a CCTV camera system can be designed to fit any scenario you can imagine. For example, cameras can be internal or external, visible or covered, static or remotely controllable. You can have a single camera or hundreds, record a day or weeks. With an appropriate Internet connection, you can keep an eye on your property even when you are away.
Why should I get a quality CCTV system?
In about 70% of cases, CCTV recordings do not serve as proof because the quality is not good enough. This may be due to poor design or poor installation of the system, so it is extremely important to seek professional advice.
You should only go to a company that can demonstrate your experience in design and installation of CCTV systems. And most importantly, you should be able to trust that the company you choose will hear and understand you.