Filter, MoCA "POE" for Cable TV & OTA coaxial networks ONLY Approved for use in most cable systems & other providers including TiVO utilizing MoCA for whole house DVR apps. Device's technology is recommend for DVR Whole House DVR applications. IEEE 6KV B3 surge survivablity is provide for additional network protection. Bandstop provides a typical 35-45dB of rejection in the MoCA 1125-1525Mhz band. Designed for use within the users premise, NOT INTENDED FOR OUTSIDE INSTALLATION