LEGRAND 430 604 Manual Del Usuario página 7

Fix the monitor on the arm:
Step 4 - Final Installation
1. To complete the installation, simply slide the arm piece into
the wall plate.
2. The platic tab on the top of the wall piece should click,
indicating that the arm piece is secure.
3. For additionnal security and stability, tighten the security
bolt located on base of the arm piece using the Allen
Wrench (H) included in the hardware kit.