DragonTouch Vision 4 Mode D'emploi page 12

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MOUNTING YOUR CAMERA
3. Lift the PCB board and slide out the battery, as shown in the picture.
Note: Do NOT rotate the PCB board to avoid reversing the camera and video button functions.
Attach your camera to helmets, gear and equipment.
4. Install the new battery, keeping the "+" pole facing up.
5. Install all 4 screws back onto the PCB board.
6. Install all 4 screws back into the cover.
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