DITEKs MRJ45C5E protects the data lines to vital business equipment. Its low voltage clamping protects sensitive 5 Volt data circuits. All four pairs are protected. The MRJ45C5E is suitable for use on data networks, network appliances, IP Video cameras, Point of Sale terminals. DSL lines, and any other piece of networked equipment. Also known as -DTK-MRJ45C5E Surge Suppressor-4 PAIR RJ45 IN/OUT MODULAR JACK - DTK-MRJ45C5E-Ditek 4-PAIR-RJ45-IN/ OUT-MOD-JACK-C - DK-MRJ45C5E