HIKVISION DS-2CD20x2-I Quick Start Manual page 21

Network Bullet Camera·Quick Start Guide
6. Wrap the network interface with the main body of the
water-proof jacket, and then rotate the fix nut clockwise to
assemble it to the main body of the water-proof jacket.
Network Interface O-ring Plug Water-proof Jacket Water-proof Ring Fix Nut Network Cable
Figure 2-4 Install Water-proof Jacket
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