Closed-circuit tv system is a collection of a video camera, a monitor plus a recorder. They enable images to be viewed. More complicated CCTV systems allow images to be viewed in sequence, at the same time or on many monitors at once all depending on the system.
Theyre able to record events in color or in grayscale. The position of the camera can either be fixed or can be remote-controlled to alter the focus; this enables you to view activities in different spots.
Zoom lenses allow
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