LevelOne NVR-0104 - Manual (Page 144)

144 NVR-0104 User Manual
You should see an area with blue border displayed on the live video
area. Use the directional buttons on the remote to select a desired
area. You are able to choose from up to 9 different areas. When done,
press the "ENTER" button on the remote to confirm selection.
Turn on Audio
The local UI is capable of playing audio coming from the camera side,
but It's not turned on by default. To turn on audio from the current
viewing channel, press the "AUDIO" button on the remote. Press it
again to turn off the audio.