Dahua DH-PFS4218-16GT-190 Quick Start Manual page 14

16/24-port poe gigabit managed switch
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enclosure GND with the GND screw. The other end of the GND cable should be reliably
connected to the ground.
The sectional area of the GND cable shall be more than 2.5mm² , and the GND resistance shall
be less than 5Ω.
Installation 8

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