HP LD4210 42-inch LCD Digital Signage Display - Manual (Page 78)

Balance: L50 to R50
15. Color Temperature (Command: u)
To adjust the screen color temperature.
Transmission
[k][u][][Set ID][][Data][Cr]
[Data] 0: Medium
1: Cool
2: Warm
Acknowledgement
[u][][Set ID][][OK][Data][x]
[Data] 0: Medium
1: Cool
2: Warm
16. Abnormal state (Command: z)
Abnormal State: Used to Read the power off status when Stand-by mode.
Transmission
[k][z][][Set ID][][Data][Cr]
[Data] FF: Read
Acknowledgement
[z][][Set ID][][OK][Data][x]
70 Appendix C Command reference ENWW