Axis VANDALPROOF 3 User Manual page 11

b. We recommend the bottom of housing be set on the
smooth flat and closely seal with the surface.
c. When you mount the camera housing on the ceiling or wall,
please use
the screws with the black rubber o-rings. Without the o-ring,
the water may seep into the machine.
d. Turn and loose the control stick, shift right and left to adjust
the vari-focal lens until the image becomes clear, then turn
and tighten the stick to fix it.
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