LG M3704CJ Owner's Manual page 75

Monitor signage
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RS-232C
RS-232C
Transmission / Receiving Protocol
33. Auto volume (Command : d u)
Automatically adjust the volume level.
Transmission
Data 0 : Off
1 : On
Acknowledgement
34. Speaker (Command : d v)
Turn the speaker on or off.
Transmission
Data 0 : Off
1 : On
Acknowledgement
Controlling the Multiple Product
Controlling the Multiple Product
A20
A20

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M3704c

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