Besides powering up two devices on the same tower it also has an integrated ESD and surge protection protection, 2 kV line to line protection 3 x 100 Base-T Networking Interfaces<br />Features Wall and pole mounting (max pole width 50 mm or 2 inch) 15 kV ESD protection, 4 kV line to ground protection, 2 kV line to line protection 3 x 100 Base-T Networking Interfaces ">