HP LD4220tm and LD4720tm Digital Signage Touch Displays

12. OSD Select (Command: l)
To control OSD on/off to the set.
Transmission
[k][l][][Set ID][][Data][Cr]
[Data] 0: OSD Off
1: OSD On
Acknowledgement
[l][][Set ID][][OK][Data][x]
[Data] 0: OSD Off
1: OSD On
13. Remote Lock/Key Lock (Command: m)
To control Remote Lock on/off to the set.
This function, when controlling RS-232C, locks the remote control and the local keys.
Transmission
[k][m][][Set ID][][Data][Cr]
[Data] 0: Off
1: On
Acknowledgement
[m][][Set ID][][OK][Data][x]
[Data] 0: Off
1: On
ENWW Transmission/Receiving Protocol 71