Vivotek FD816B-H(T) User Manual page 137

■ Lock/Unlock: Select the checkbox in front of a desired search result, then click this button. The selected
items will become Locked, and they will not be deleted during cyclic recording. You can click again to
unlock the selections.
For example:
■ Remove: Select the desired search results, then click this button to delete the files.
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User's Manual - 137