D-Link DCS-2530L User Manual page 37

Section 3: Configuration
Sound detection enables the camera to monitor the environment for loud sounds. You may set the volume threshold used to determine whether
sound was detected or not. If this option is selected, the trigger by option under Video Clip, Snapshot, or SD Recording should also be selected.
For more details, refer to "Event Setup" on page 39.
Sound Detection: Select this box to enable the sound detection feature of your camera.
Detection Level: Specify the volume level that a sound must exceed in order to trigger
the sound detection feature. The lower the number, the more sensitive
the camera will be to sound.
Click Save Settings to save your changes.
D-Link DCS-2530L User Manual
Sound Detection
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