[. . . ] CHECK THE USER MANUAL OF THE PROJECTOR TO SET THE PROJECTOR DISTANCE TO SCREEN. [. . . ] CHECK THE USER MANUAL OF THE PROJECTOR TO SET THE PROJECTOR DISTANCE TO SCREEN. BE SURE THAT THE WALL MOUNT IS INSTALLED IN A SAFE POSITION ABOVE HEAD HEIGHT AND NOT OVER EXISTING PASSAGEWAYS. CHECK THE LOCAL/NATIONAL REGULATIONS IN PUBLIC/COMMERCIAL USED ROOMS. INSTRUCTIONS FOR USE: STEP 1: The telescopic wall mount should be fixed to the wall horizontally by a trained specialist using the right kind of screws according to the structure of the wall ( Figure 1a). Then fix the screw to prevent ball joint systeme from falling on the ground as in Figure 3. Figure 3 STEP 4: The ball joint systeme can be adjusted 360° horizantally and 20° vertically. Tighten the cam lever on the pivot point after adjusting the position ( Figure 4) Figure 4 STEP 5:Push the safety button towards the arrow direction to set the wall-projector distance ( Figure 5). [. . . ] Then fix the screw to prevent ball joint systeme from falling on the ground as in Figure 3. Figure 3 STEP 4: The ball joint systeme can be adjusted 360° horizantally and 20° vertically. [. . . ]