Outdoor Ethernet Surge protector for gigabit GbE PoE/high PoE+ (HPoE) 1000 Mbps LAN Ethernet network Gas discharge tubes for full protection GDT - Lightning Suppressor RJ45 cable protection Cat6/Cat5 Outside use weater resistant - line-line line-ground protection, bidirectional clamping, 5Ka 8/20s Thunder arrestor protects computer networking equipment devices like router, modem, camera, switch etc. Mounting holes to mount to the wall, electric Panel or network rack cabinet - box Lock option