ITEM NAME:3Pack Aluminium Connetor Coaxial Video Signal Arrester Protection Description: Shielded aluminum alloy,protect video signal, data 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 . 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:75*25*25mm/2.76*0.98*0.98inch Model: SP-V40A Impedance:75ÃŽ © Imac=10KA Package Includes: 3 Pieces Piece Video Signal Protector Device..Material: Aluminium Alloy. Shielded aluminum alloy,protect video signal, data protector device. 3 Pieces Piece Video Signal Protector Device. Model: SP-V40A.