CO/4-110 line surge protection

Superior protection for CO lines. Four lines protected. S110D punchdown block on input, S110D punchdown block and RJ-11/45 jacks on output. Choose between output connectors based on installation. PTC resistors open when a surge occurs, protecting your equipment, but unlike other telephone protectors, the PTCs close again once the surge passes. Less downtime, and less service calls. Lifetime $5,000,000 Connected Equipment Warranty, Lifetime Product Warranty.

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