Description: Easy to install. Install between Ethernet and the protected device. Protects your Ethernet device from the damage of lightning & surge. Connectors: RJ-45 Female to Female , just plug cable in and ground device. "IN" end is for input and "OUT" end is for output to the protected device, then set ground wire well and straight. Application with Single video, RS485 data , DC 12 Power , DC/AC24V Power , 220V Power Supply, Telephone, Network. Specification: Material: shielded aluminum alloy; Connectors: RJ-45; Dimensions: 80*15*20mm/3.15*0.59*0.79inch. Package Includes: 1 Piece Ethernet RJ-45 Lightning Surge Protection Device