You can handle historical alarms, including searching for historical alarms, manually acknowledging alarms, and playing alarm-triggered recordings.
- Log in to the IVS C/S client as the admin user and access the Alarms tab page.
- Click the Historical Alarms tab. The Historical Alarms tab page is displayed, as shown in Figure 1.Figure 1 Historical Alarms tab page

- Search for alarms.
- In the Protection Zone List, Camera List, Alarm Source List or External alarm system panel, select one or more devices whose historical alarms you want to query.
- Set search criteria.
- Click Search.
Alarms that meet the search criteria are displayed.
- Acknowledge an alarm manually.
- Select an alarm that is not processed or is to be acknowledged.
- Click Acknowledge.
- In the Acknowledge Alarm dialog box that is displayed, click OK.
If the Acknowledge Alarm dialog box contains an Acknowledgement description text box, enter information in that text box.
- Play an alarm-triggered recording.
NOTE:Alarm-triggered recordings can be played only when the video recording linkage action has been configured for the alarm source. If you have not configured any video recording linkage action for the alarm source, the system will display a message indicating that no recording is found.
- Select an alarm generated by a camera that has been linked to video recording.
- Click Playback to switch the Playback tab page to play the alarm-triggered recording.

