American Dynamics illustra 600 Installation & Operation Manual page 21

2. Camera Installation
Method 2: Flush mount using locking arms
1. Turn the silver-colored screws clockwise to extend the locking arms.
2. Tighten the screws sufficiently to compress the arms to adjust to the mounting surface.
Locking arms
Tighten the screws
3. Adjust the focusing position by rotating and panning the camera base. When rotating the camera base,
do not rotate it past the stop point.
4. Use the supplied security torx key to tighten the three cover screws to replace the dome cover.
5. Finally, insert the screw hole plugs to the three cover screws.
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