American Dynamics Tyco 8 - Manual (Page 14)

Installing IP SDU8 with an Indoor Hardmount
3-4 Installation Guide
Figure 3-4 Aligning the Cap and Base tabs
14 Turn the eyeball assembly clockwise until you hear a click.
Figure 3-5 Locking the eyeball assembly
15 For ease of installation, adjust the two "swing out" mounting clips for ceiling thickness.
Figure 3-6 Adjusting the mounting clips
Using safety wire, attach the dome to a strong structural ceiling member as follows:
Base Tab
Cap Tab