Dahua IR High Speed Dome Camera User Manual page 16

B. Use an electrical drill to make four holes for M6 screws on the
above-drawn positions, and drive in the expansion M6 screws;
C．Fix the installation board of the bracket firmly on the wall with four M6
screw nuts and washers.
D. Push the power cable, communication cable and video cable through the
bracket tube, then push the installing port on the top of the outer housing into
the installing hole of the bracket, tighten the 3 M6 screws and fix well. Make
sure the M6 screws just fit in the screw slot of the installing port of the
housing. (See the picture below)
E. Put the power adaptor into the wall bracket and pin the power adaptor with
the adaptor pinning board, lest the power adaptor slides out. (See the figure
below)
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