D-Link DGS-3000 series Reference Manual page 304

DGS-3000 Series Layer 2 Managed Gigabit Switch Web UI Reference Guide
To view this window, click Monitoring > Peripheral > External Alarm Settings as shown below:
Figure 11-22 External Alarm Settings window
Click the Refresh button to refresh the display table so that new entries will appear.
Click the Edit button to configure the specified entry.
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