User manual

QSTD5304 Digital Video Recorder User Manual
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If pressing "Down" button, it will display the second channel in full
screen.
If pressing "Left" button, it will display the third channel in full screen.
If pressing "Right" button, it will display the fourth channel in full screen.
If pressing "Enter" button, it will display the four-divided channel.
If pressing "Audio" button, it will switch the voice of corresponding
channel in live display mode.