ESP DIGI-VIEW 4 System - OSD Operation Guide: Audio Mute; OSD Operation Guide: Audio Channel Select

Use ▼ and ▲ to select audio out mute.
Press  to choose ON/OFF.
Press  to return to the main menu.
AUDIO OUT MUTE :ON
AUDIO CHANNEL : 1
Use ▼ and ▲ to select audio channel.
Press  to cycle through options.
(Channel 1,2,3,4)
Press  to return to the main menu.
DVR only records one channel of audio.
Operation Guide: AUDIO CHANNEL SELECT
Operation Guide: AUDIO MUTE