OSD Control Button
1.Type A, Type B, Type C of OSD button could be used when it needs to OSD control.
2.Type D is extra Option (wired Remote controller)
▲Up button: Moves the cursor upwards. Use this button to select an item or adjust the parameters.
▼Down button: Moves the cursor downwards. Use this button to select an item or adjust the parameters.
◀Left button: Moves the cursor to the left. Use this button to select or adjust the parameters of the selected item. The parameter changes each time this button is pressed.
▶Right button: Moves the cursor to the right. Use this button to select or adjust the parameters of the selected item. The parameter changes each time this button is pressed.
◎Set button: Executes selections and displays a submenu for an item with the 
mark.
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