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It is important to choose the best CCTV system which suits ones requirements.
Because surveillance is based on sensory perception, surveillance devices usually work in conjunction with guards and other monitoring mechanisms to extend their capabilities and range of perception. A closed-circuit TV (CCTV) system is a commonly used monitoring device in most organizations, but before purchasing and implementing a CCTV, one need to consider several items: The purpose of CCTV To detect, assess, and/or identify intruders. The type of environment the CCTV Miami camera will work in Internal or external areas.
The field of view required large or small area to be monitored. Amount of illumination of the environment lit areas, areas affected by sunlight and unlit areas. The reason one need to consider these items before one purchase a CCTV product is that there are so many different types of cameras, lenses, and monitors that make up the different CCTV products. One must understand what is expected of this physical security control, so one purchase and implement the right type.
CCTVs are made up of cameras, transmitters, receivers, a recording system, and a monitor. The camera captures the data and transmits it to a receiver, which allows the data to be displayed on a monitor. The data are recorded so they can be reviewed at a later time if needed. Multiple cameras can be connected to one multiplexer, which allows several different areas to be monitored at one time. The multiplexer accepts video feed from all the cameras and interleaves these transmissions over one line to the central monitor.
This is more effective and efficient than the older systems that require the security guard to physically flip a switch from one environment to the next. In these older systems, the guard can view only one environment at a time, which of course makes it more likely that suspicious activities will be missed.
A CCTV Miami sends the captured data from the camera's transmitter to the monitor's receiver, usually through a coaxial cable, instead of broadcasting the signals over a public network. This is where the term "closed-circuit" comes in. This circuit should be tamperproof, which means an intruder cannot manipulate the video feed that the security guard is monitoring.
The most common type of attack is to replay previous recordings without the security personnel knowing it. For example, if an attacker is able to compromise a company's CCTV and play the recording from the day before, the security guard would not know an intruder is in the facility carrying out some type of crime. This is one reason why CCTVs should be used in conjunction with intruder detection controls.
Author Bio:
Lee Wood writes unique and informative articles about Security guard companies in Miami. For more information, please contact us.
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