The screen switch is usually located to the left or right side of the blackboard/screen area at the front of the room. Some rooms require that you hold the button down while the screen lowers; others require that you press the button only once. Both models have an auto stop feature, which keeps the screen from descending too low or raising too high.
|1. Use the projection screen switch to raise or lower the screen|
| Manual (Pull Down) Models:
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