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What is a video intercoms and their classification

2014
28
Nov
Admin
viewsViews: 614         commentsComments: 0

In today's world, society is quite relevant is the issue of security, the protection of their personalof space from unwanted subjects and influences. Certainly, more personal space than a house, apartment, entrance, garden, garage unlikely to be found. The most common method now restrict access to the territory or premises, is the use of electronic locking devices - intercoms. This system of interconnectionsOF DATA elements, which allows through the use of electromagnetic lock to restrict access through the door. The kit includes all intercom subscriber units (outdoor, with a dial pad, and internal, with the unlocking device), switch and lock. By way of organizing communication through user devices, intercoms are audio-visual equipmenteo types. The first - a simple and cheap, providing only audio communication. - The subscriber unit, which in addition to audio, the video has the ability to translate from the installation site. Such a system is, of course, is much more expensive than a simple door phone, but instead has a lot more opportunities, as well as Propertyennuyu extended classification. As a rule, intercom with video calls are classified according to the following criteria:

  • video signal type (black and white, color);
  • type of audio communication (subscriber device with voice tube or without);
  • UnitsETS video channels (1-, 2-, 3- and 4-channel). This criterion determines the number of possible screens to display the information, ie, determines the possibility of organizing the surveillance of small points.

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