Returnstar Interactive Tech IQTouch L Series User Manual page 10

6. Volume reduction
Click the icon to turn down the volume.
7. Volume plus
Click the icon to turn up the volume.
8. Brightness reduction
Click the icon to decrease the screen brightness.
9. Brightness plus
Click on the icon to increase the screen brightness.
10. Whiteboard
Click on the icon to enter the educational whiteboard software.
11. Endorsement
Click the icon to open the annotation for writing.
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