Product Name : Surge Protector Arrester;Connector Type : RJ45;Rated Discharge Current (Isn) : 5 KA Max. Discharge Current(I) : 10 KA;Data Transfer Rate : 100MHz Wire Length : 26cm/10.2 inch ;Dimension : 7.9 x 2.5 x 2.5cm/3.1 inch x 1 inch x 1 inch (L x W x H) Main Color : Black, Silver Tone;Material : Aluminum, Plastic Net Weight : 280g Protects your Ethernet device from the damage of lightning-surge. Used to protect the coaxial data transmission of network communication circuit system, such as computer network communicationsystem, repeater, switchboard, rounter and other ethernet devices. Easy to install. Install between Ethernet and the protected device first, "IN" end is for input and "OUT" end is for output to the protected device, then set ground wire well and straight. Package Content: 4 x Surge Protector Arrester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.