4.4 Installation of DVR
After fixing the bracket horizontally, remove the level, align it and stick on the right
side of the main unit in the area as shown in the figure below:
Connect the DVR to the bracket with the front side facing inward (with the teeth on
the left side of the bracket engaged with those on the left inner side of the DVR),
and tighten the bracket stud clockwise with a PH2 cross screwdriver (before
tightening, first adjust the DVR to be vertical).