HP LD4730 and LD4730G LCD Ultraslim Bezel Digital Signage Displays Command Reference Guide

07. Contrast (Command: k g)
To adjust screen contrast.
Transmission
[k][g][][Set ID][][Data][Cr]
[Data] Min: 00H to Max: 64H
Acknowledgement
[g][][Set ID][][OK][Data][x]
08. Brightness (Command: k h)
To adjust screen brightness.
Transmission
[k][h][][Set ID][][Data][Cr]
[Data] Min: 00H to Max: 64H
Acknowledgement
[h][][Set ID][][OK][Data][x]
09. Ambient Light Sensor (Command j b)
To set the frequency of adjustment to ambient light.
Transmission
[j][b][][Set ID][][Data][Cr]
[Data] 00H: OFF
01H: LOW
02H: HIGH
8 Command reference ENWW