DVR (Digital Video Recording) is an electronic device where it works to distribute images from the camera to later appear on the screen or regular tv, and also the tool is able to record all events or images that appear on camera, with many existing arrangements and complete the tool is really very helpful in the security system, this tool has a wide range of types in the sense that these tools can be adjusted by the number of cameras to be installed, it is an international standard 4 channel, 8 channel, and 16 channels.
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