Planet Networking & Communication NVR-420 User Manual page 36

Play by specific time
If you know when a recording was taken place, you may choose the "Play
by start time" from the "Search Method" drop-down list
Then you will be prompted to enter a specific time and date for the
recorded video.
Search by event (Most Recent)
This function quickly displays the most recent event recordings from the
selected channels, displaying the most recent result top down.
You may click "Update" to update the list to display the most recent results.
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