HIKVISION DS-2CD2722FWD-IS Quick Start Manual page 27

Network Dome Camera·Quick Start Guide
2. Align No.1 screw holes with the corresponding screw holes on the
bracket, and secure the mounting base to the bracket with screws.
3. Align the screw holes for camera fixing, and secure the camera to
the mounting base.
Cut a Hole for In-ceiling Mounting
Install Mounting Base
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