— the complete absence of a screen in the design of the DVR. Own display expands the capabilities of the device; however, its characteristics are usually very limited, they are only enough for cropping the “picture” and the most general viewing of the captured video. And some advanced models may provide the ability to connect an external display — for example, a tablet via Wi-Fi. Thus, not all users really need a screen (especially since it significantly affects the cost of the registrar), so models without it are selected in a separate category in the selection.
