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You can hear sound of the stored WAV file when ‘Enable Voice Guard’ is checked and a motion sensor is operating.
Import You can also store the WAV file of each channel separately by clicking ‘Import’ button.
Voice Hold Tim: Upon selecting ‘voice hold time’, you can only hear the sound of first active camera even when
several motion sensors become active between selected time interval (in sec). When the selected time (sec) interval
lapses, you can hear the sound of next camera.