TII-210 Coaxial Broadband In-Line Surge Suppressor (TII-210MF75F225-31) - cableTVamps&reg; Unique Patented In-Line Coaxial Gas Tube Lightning Surge Protector. Frequency Range is DC - 1.0GHz, providing for all Cable TV & OTA Applications Meets UL Primary Surge Protection Requirments. Listed to UL 497C & CSA Certified. Enviromentally Sealed to withstand internal pressure of 15 PSI, insuring water tight intregity. Meets SCTE (Society of Cable Communications Engineers) ANSI/SCTE Spec 1996R2001.