Vdwall LVP615U User Manual page 106

LVP615U 使用说明
（5） Audio
Audio setting interface could set LVP615U's corresponding
input signals of two audio inputs, in order to achieve audio and
video synchronous switch.
（6） Network Setting
Network setting menu is used to input network parameter of
LVP615U, this is the premise of remote control.
（7） Language Setting
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