D-Link ANT24-1800 User Manual page 2

System Requirements
Installation
(If needed)
Install the surge protector. (You can install with
optional ANT24 series low loss cables)

/antenna
ANT4-0700 Install Guide
Note:
With Surge protector adaptor on an outdoor serial is
attached to the lightning protestion system (ground)
of the building. All devices downstream are then
protected by the ground from lightning strikes.It can
protect your sensitive WLAN equipments from high
voltage surges caused by dischargeand transients
at the antennas. It will be integrated in the cabling
system between the antenna and the coax-cable and
must have direct ground contact.