Box Camera installation angle directly affects the scope of surveillance images, so the installation needs to be more to operate according to needs on the ground. If installed in the cell door is less than 6 meters, the camera angles suggest the best is 30 ° -60 °; if installed at the cash register, the camera angle should be considered in the ± 15 ° -20 ° and so on. In short, the video camera as much as possible to avoid backlighting situation, and this can only as much as possible to meet customer requirements. 
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