M-system 47DAC Operating Manual page 21

(4) Make sure that the watertight packing is placed behind the front cover regardless of necessity of water-tightness.
(5) Insert the unit into the panel cutout.
(6) Push the mounting brackets into the grooves on both sides of the rear module, until they hit the panel's rear side.
IMPORTANT
To conform to degree of protection IP66, confirm visually that the packing is not contorted, cut off or excessively run off
the edge after installation.
Watertight packing
Watertight packing
Panel
Bracket
Panel
Fixing groove
47DAC OPERATING MANUAL EM-9518-B Rev.4 21