What is CCTV ?

Test different camera models to see what works best with the lightning in your area, because no matter whether they’re inside or outside, the lighting will differ throughout the day.

In addition to crime prevention, a CCTV system also allows for a subsequent investigation to find possible suspects recorded by the cameras during specific occurrences.

You will want to check any reflections and backlighting during the day and night

It's hard to say with 100% certainty whether or not you are being monitored when walking through public places. With the massive production of new security cameras, it is easy to find them installed in many places.

You will hardly drive on a road from one city to another without being monitored by at least one security camera. Nowadays it is very common to find them installed on poles along great highways and even on streets and avenues of small and large cities.

Depending on how expansive the area is that you want to cover, the resolution of the CCTV camera you choose will need to reflect the landscape in order to provide a clear..

Audio isn’t required, however, if you do wish to opt for audio there are systems where you can speak to a person who has broken into the property

Factories, banks and many other types of companies use security cameras to monitor manufacturing processes and products, some even use security cameras to control activities performed by employees, with the intention of keeping a record of what is happening during working hours.

Audio can be used to deter criminals by automatically playing something when they get a certain point inside, an ideal way to make them think that there are people inside the building.

Shops and small businesses also use CCTV systems to prevent theft and possible legal issues involving clients are also aided by CCTV footage.

It is common to have recorded evidence of employees misbehavior to be used in lawsuits. Sometimes the footage can also benefit the employee, it all depends on the situation recorded by the security cameras.

CCTV relies on strategic placement of cameras, and observation of the camera's input on monitors somewhere.

The first CCTV system was installed by Siemens in 1942 in Germany to monitor rockets launching during the war.

cameras communicate with monitors and/or video recorders across private coaxial cable runs or wireless communication links, they gain the designation "closed-circuit" to indicate that access to their content is limited by design only to those able to see it.

The first commercial version of the CCTV system appeared in 1949 in the USA.

Older CCTV systems used small, low-resolution black and white monitors with no interactive capabilities. Modern CCTV displays can be color, high-resolution displays and can include the ability to zoom in on an image or track something (or someone) among their features

At first, it was not possible to record the images, but only to monitor live what was happening close to the cameras, years later, in the 1970s, analog tape recorders began to become popular and could be used in systems.

At first, it was not possible to record the images, but only to monitor live what was happening close to the cameras, years later, in the 1970s, analog tape recorders began to become popular and could be used in systems.

Talk CCTV allows an overseer to speak to people within range of the camera's associated speakers.

The concept of traditional analog CCTV systems is quite simple, a camera must be connected directly to a monitor through coaxial cables that can carry the analog signal.

CCTV is finding increasing use in law-enforcement, for everything from traffic observation (and automated ticketing) to observation of high-crime areas or neighborhoods.

The first analog CCTV cameras was a very low-resolution model. It was impossible to observe the details of objects and people with such a camera.

Resolution on analog CCTV systems is measured in TV lines, which represents the number of lines generated and displayed on a monitor. This type of system will cease to exist in the next few years.

The idea of a CCTV system is to generate, store and display the videos on a monitor, the diagram below exemplifies this concept on the 3 blocks.

The CCTV cameras generate the images, a recorder stores the footage and finally, a monitor displays the video from the camera or tape recorder.