I ordered this because I live in an apt. and only have one main cable line. I have 4 bedrooms that needed tvs. So I had to run a splitter from the main cable in 1 room down the hall to the other 3, then another splitter to connect the other 3 bedrooms to cable! So my signal was split twice! I couldn't get many channels, and the signal was poor, scrambled, or the screen would go black. The negative..the packaging was awful...the box had been cut open, rewrapped and taped, as if it was used. It was sold as "new". The positive..The product itself had no signs of being used. I plugged it up, connected the three tv cables into it..and it worked!! Im so happy. I am watching a channel on my tv right this moment, that I haven't been able to pick up for months! If you have a splitter now, and are getting poor reception, this is just the thing you need!