SMSL D400 ES - Display and System Reset Functions; Screen Dimming and Brightness Settings; System and Bluetooth Reset Procedures

Instructions
DIMMER
BRIGHTNESS
LEVEL 1 ~ LEVEL 6
RESET
5 second ~ 60 second
(The range is 5 seconds-60 seconds. After setting, the screen will automatically
go off within this time, and the screen will re-light up if you operate the remote
control or the knob at any time.)
During Bluetooth input, long press the middle button of the knob, the system
will only reset the Bluetooth pairing status;
During other input, long press the middle button of the knob, the system will
clear all settings, including Bluetooth.