Nexxt Solutions NHC-F410, Руководство пользователя

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Night vision mode
* Auto day/night vision mode: automatically switches
between both states based on environment lighting.
* IR mode: keeps the IR LEDs always enabled.
* Light mode: if you select this option, the floodlight will
remain always on, no matter the time of day or current
lighting conditions.
Siren adjustment
Siren volume: Use the sliding bar to adjust the audio level
of the alarm.
Siren duration:
Determines the time you want the alarm to
sound. The maximum setting allowed is 600 seconds.