This RJ11 Audio Arrester is suit to such as modem, telephone-machine which protects the electric network shocked by the or surge over voltage. Integral ground line to divert surge energy. This Audio Modem Arrester provides protection against transient voltage surge in a facility's communication line. Enclosure and RJ11 connectors provide for good noise suppression. Use this Audio Protector to make sure system and equipment's when surge come from . size:83x25x25mm Material:ABS colour:Photo Color Package Contents: 1 * Surge Protector Only the above package content, other products are not included. Note: Light 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. This Audio Modem Arrester provides protection against transient voltage surge in a facility's communication line. This RJ11 Audio Arrester is suit to such as modem, telephone-machine which protects the electric network shocked by the or surge over voltage. Enclosure and RJ11 connectors provide for good noise suppression. Use this Audio Protector to make sure system and equipment's when surge come from . Integral ground line to divert surge energy.