Here is some other information to you for reference
The control is RS485.
The setting is below:
Baud rate is 9600
1 is stop bit
# define  CommandAA  0xaa// Rotate
# define  CommandXX  0x01// Stop left and right Rotate
# define  CommandYY  0x02// Stop UP and Down Rotate
# define  Command11  0x11// Rotate Up
# define  Command22  0x22// Rotate Down
# define  Command33  0x33// Rotate Left
# define  Command44  0x44// Rotate Right

# define  CommandBB  0xbb// Control LED light
# define  Command55  0x55// Increase the light brightness
# define  Command66  0x66// Reduce the light brightness