The DLPS-15D offers longer life, greater current handling capacity and faster response than any other type of protection. Developed and patented by Cable Innovations the 1Ghz., DLPS- 15D incorporates dual direction Sidactor technology, protects in both directions from the  house and from the cable drop line. With a trigger sensing time of one nanosecond, the DLPS-15D will virtually eliminate damage to drop line electronics caused by over voltages.   DLPS-15D Drop Line Surge Suppressor High speed solid state surge protection, for reliability and durability Handles 1000 Amps. Dual direction protects from the house, and to the house.  UL approved Power Passing (2 amps) Meets NEC-830-30 Protect Any  drop, used in place of ground block..  Application Features        Set top boxes Modems Subscriber Electronics Drop amps Drop passives