Dahua Technology NVR41 Series, User Manual, Page: 206 / 355

Local Basic Operation 194
Figure 4-143
Step 2 Draw the detection rule.
1) Click to draw the rule on the surveillance video. See Figure 4-144.
Figure 4-144
2) Set parameters. See Table 4-37.
Table 4-37
Parameter Description
Preset Set the preset point for IVS detection according to the actual needs.
Name Customize the rule name.
Duration Set the minimum time that the object stays until the alarm is triggered.