The ITW Linx Category 5e 25 Pair Building Entrance Surge Protector protects high-performance 25 pair category 5e outside plant cables as well as category 5e UTP cables in T1 / ISDN applications. Available for 16V (LAN / Data) and 235V (voice) clamping level. Punch down the OSP cable on the left side in the integral 110 connectors. Grounding hardware (included) clips onto the cable sheath. Punch down the UTP cable on the right side into the integral 110 connectors.