This article will show you 2 methods of enabling audio on the camera live view via PoE NVR.
Applies to: RLN4-410 (hardware version H3MB17), RLN8-410 (hardware version H3MB02), RLN8-410-E, RLN16-410 (hardware version H3MB02/H3MB06)
Note: Please remember to connect a speaker to your NVR.
Here is a video for your reference:
Method 1. Log into your cameras in the NVR and left click camera live view to pop up the toolbar, click the to turn on Audio.
Method 2. Go to Menu > Display > Output and enable the Audio. Then click on the Apply.