wikango WK900 Manual Del Usuario página 45

3. Tighten the knob, and ensure the device is firmly fixed.
4. Adjust the angle
Note: It may impact 'LDWS' function if the angle is not properly
installed.
The best status is that the center of image on the screen display is
facing to the front of car, in the middle of top/down/left/right and
keep the horizontal line parallel to the horizontal direction of the
image.
Install the on the upper position of windshield, in order to avoid
shooting too much of the engine hood.
Not proper angle status, as the picture shows below:
Image up 30% Image skew in clockwise direction
Image of engine hood covers 25% the screen
45 I ENGLISH