Marathon Four Port (4 output) Indoor/Outdoor High Performance 5-1000 MHz Cable TV HDTV Coaxial Digital Signal Splitter (All Ports Down) 5-1000 MHz Bandwidth. Compatible with all Cable TV Services All precision machined F ports face downward - can be used in tight or limited access locations Low loss design - 3.5dB Insertion Loss, 25dB port-to-port isolation Non-Power passing design - blocks power from passing between devices Waterproof to 15PSI. Lifetime warranty from cableTVamps