Dahua NVR21-4KS3 Series User Manual page 329

Step 4 Click to draw a detection zone on the live page.
After drawing the rule, supports the following operations.
● Modify the name of the rule.
● Click
to delete the drawn rule.
● Click
to redraw the rule.
Step 5 Click under Parameters, set parameters, and then click OK.
Figure 5-199 Parameters (Detect by attributes)
Figure 5-198 PPE detection
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User's Manual