Instruction: Answer the given question using the supporting document.

Input:
Question: is this all you need?  or do you need another device for inside the house?
Document: works fine. went from no service inside house to several bars inside..would buy another antenna if i need better cell phone service.
Simply install and forget about it. I have had this up for almost a year now and would definately purchase another if I need it in the future.
Tried it, but did not improve signal at all. Nothing I could do would get it to improve my 0-2 bar inside the house.
very good, works fine,  I put it on the roof  and have a good signal inside my house,  muy bien trabaja muy bien, la recomiendo
I was getting zero or one bar when inside my house. I mounted this on the mount for my satellite dish, pointed it to the nearest cell towers (found by using free OpenSignal app on my iPhone) and BINGO I now have 4 and 5 bars. Worth every penny.
I called my home phone, called a couple of friends to check for voice quality, etc, and  had a good connection. When my wife came home, her phone connection worked  perfectly also.As a matter of fact, we get a better signal inside our house than we do outside, in our yard.
Works better than original omni directional.I have no signal inside my house. Don't have enough signal outside to talk. But with this antenna I get three bars and 3g.I only have 15 ft. area inside. But that is better than nothing. This has been the best antenna for low signal like mine!
I was very skeptical as too how much gain I would get from the zboost xy545 so I purchased the yagi antenna as well. I figured If I could get at least one room with 3 bars it would be worth it, since my phone only got 1 bar inside and 2 bars outside. Long story short got coverage in whole 2000 square ft of my home with 5 bars and far side of the house 3 bars.
works well, got great service,  guess I didn't need this after all but it was better build than the antenna that came with the unit so we kept it and are using it works great
I have even raised the height of the antenna three different times thinking I was not &#34;receiving&#34; a signal. I have no idea if this is the antenna or the signal extender unit, but you need all for the system to work, therefore they all get the same rating.
Answer: This is just the antenna, you need the inside device to make it work.