Dahua DH-XVR5104HS-4KL-I3 User Manual page 208

The intrusion detecting function is active. When the target enters and leaves the area, or the
target appears in the defined area, the system activates alarms.
5.11.1.3.2 Smart Search for IVS Function
You can search for the intelligent events and play back.
Select Main Menu > AI > SMART SEARCH > IVS.
In the Channel list, select the channel that you want to search for the events, and then set
other parameters such as start time, end time, event type, and alarm object.
Click Smart Search.
The results that satisfy the searching conditions are displayed.
IVS
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User's Manual