I bought a Power A Wii ultra sensor bar but my wii remote still won't work! Help?

I read the instructions, and everything. I bought it because the one the Wii came with broke and I needed another one, but it does not seem to be working. Can someone please explain how to use it properly? The instructions were no help at all. Did I need to buy a wireless connecter for it?
Update: the box it came in didn't mention anything to connect to the Wii, and the instructions said nothing about a part that connects with the wii. :(
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