Infrared Resources 30~60kHz IR Remote Receiver Extender over CAT5/6 to 700ft up to 8 devices including U-Verse,SA/Cisco Explorer,DTV,Bell,Foxtel and other Set Top Boxes,Digital Terminal Adapters,DTA Expandable up to 8 emitters( additional emitters sold separately) on the receiving CAT5 dongle, -3- Dual emitters(additional emitters sold separately? on transmitter dongle 30~60kHz IR receiver with blue LED confirmation and 9ft lead. Made in S Korea Compatible with ALL 38kHz-56kHz A/V device's i.e. ATT-Uverse, Scientific Atlanta STB's Emitters flash RED to indicate IR signal is being transferred to the device IR Sensor IR Filtering Technology effectively blocks out external noise. IRI,CFL,ESI,EMI,Plasma, Sun