Updating Remote Devices - Dahua NVR21-4KS3 Series User Manual

Step 2 (Optional) Set Enhancement Mode to On or Off.
When enhancement mode is enabled, the transmission distance of the PoE port will be
extended.

5.7.9 Updating Remote Devices

You can update the firmware of the connected network camera through online update or file
update.
Procedure
Step 1 Select Main Menu > CAMERA > Camera List > Update.
Figure 5-75 PoE
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User's Manual