Description: Shielded aluminum alloy,protect network signal, fit video & data lightning protector device. For control signals,computer network signals, hubs, network cards, network switches, Modem, fax, data communication. Mulit-level protection, flow capacity, low clampling voltage, fast response time, low insertion loss, transmission rate advantages. Special maintenance is not needed for the protection device; please replace immediately in case of damage by high voltage or lightning. Protectors have input (IN), output(OUT) mark, output terminal and protected, donnot connect the device to connect. Otherwise it will cause the protector the damage. Specification: Material: Aluminium Alloy Size:80*25*25mm/3.15*0.98*0.98inch Model: SP-RJ45 Data: Ethernet 100MHz Isn=5KA Imac=10KA Package Includes: 1 Piece Network Signal Protector Device. 1 Piece User Manual