The Corning USP™ 123 series insulation displacement connection (IDC) station protector is designed to provide superior surge protection in any customer premises application. Utilizing a state-of-the-art, heavy duty three-element gas tube with an innovative "no backup air gap" design, the USP 123 offers longer service life and reduced maintenance costs. Using the latest in environmentally-sealed insulation displacement connection (IDC) technology, the USP 123 is available in two versions: TandAction™ hybrid station protector for VDSL-rated applications, and stand alone gas tube (no backup air gap) for standard category 5 compliance.The robust wire guide easily directs standard 22-24 AWG wiring to each tip and ring channel assuring straight through insertion and a solid connection. The wire guide can be removed for terminating larger gauge wires up to 18.5 AWG (F-drop). Highly visible, gel-sealed test contacts allow easy testing and troubleshooting using standard test clips. Two ground clips provide multiple mounting orientations for maximum flexibility in any application.