1[Guard Your Devices] Plug Ethernet surge protector into your network cable to guard against network surges. This is a great protection for your expensive router and outdoor POE antenna. 2[Full Protection] Ethernet surge suppressor has 8 built in TVS thunder protectors to prevent thunder and other abnormal currents from damaging your computer equipment through the network cable. 3[Wide Applications] RJ45 surge protector is used in a wide range of applications and is ideal for protecting network workstations, printers and other Internet devices with network Ethernet connections. 4[High Performance] RJ45 surge suppressor's fixed interface shields external EML, RFL and other electromagnetic interference, effectively preventing network signal damage. PC flame retardant material, 100V0 fire rating. 5[Plug And Play] Thunder arrester without input or output cable side, both sides are the same RJ45 interface, regardless of whether your protected equipment behind any particular side, as long as the correct cable is connected to work properly. Item Type: Ethernet Surge Protector Material: PC, PCB Product Size: Approx. 46 x 26 x 24mm / 1.81 x 1.02 x 0.94in Interface: RJ45 Female Product Cores: 8 Cores Product Features: Thunder protection, shock resistance, vibration, anti pull anti electromagnetic interference protection, no need for installation tools, plug and play, flexible in use, the use of Cat5 network cable transmission, easy to lay the wire, wide compatibility, support high power and low power devices. 1 x Ethernet Surge Protector