Dahua DH-XVR54 L-I2 Series User Manual page 238

At Type, you can select Local or Remote.
Local: Viewing the existing face databases or adding new one on the DVR.
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Remote: If you have face recognition camera, you can select this to view the existing face
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databases or adding new one on the camera.
Click Add.
Enter the face database name, and then click Save.
Click to modify database name.
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Face database configuration
Add face database
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User's Manual