LG M3702C-BA User Manual page 46

RS-232C
Transmission / Receiving Protocol
05. Volume Mute(Command : e)
To control On/Off of the Volume Mute.
Transmission
[k][e][ ][Set ID][ ][Data][Cr]
Data 0 : Volume Mute On (Volume Off)
1 : Volume Mute Off (Volume On)
Acknowledgement
[e][ ][Set ID][ ][OK][Data][x]
Data 0 : Volume Mute On (Volume Off)
1 : Volume Mute Off (Volume On)
06. Volume Control(Command : f)
To adjust Volume .
Transmission
[k][f][ ][Set ID][ ][Data][Cr]
Data Min : 00H ~ Max : 64H
(Hexadecimal code)
Acknowledgement
[f][ ][Set ID][ ][OK][Data][x]
Data Min : 00H ~ Max : 64H
Refer to 'Real data mapping' page A7.
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Controlling the Multiple Product
A6