Seculink NVR1104PF, Инструкция по эксплуатации

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9.2. Video Blind
The video image transmitted by the front camera to the recorder is affected by the
outside environment. When the light intensity reaches the set sensitivity parameter, the
video blind alarm is triggered and the linkage function is activated.
Note: Like motion detection, the analog channel of hybrid mode /full analog channel and
network channel video blind functions are different. The network channel video blind alarm
function must not only enable this function in the recorder, but also the front-end network
connected to the corresponding channel. The camera should also turn on the video blind
function, otherwise the video blind alarm function cannot be realized, and the analog
channel can be turned on by the video recorder as long as the video blind alarm is
enabled.
The analog channel of the hybrid mode and the full analog mode can set the sensitivity,
and the network channel cannot set the trigger sensitivity; the level of sensitivity is: lowest,
lower, medium, high, higher, and highest.