Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Works not quite perfect

Setup is a breeze and I had it installed and working in probably 3 minutes, but I had the screwdriver out already.The transmitter box (the one that wires into the existing doorbell) is a little larger that it probably needs to be, and this is because, for some reason, it has the jumpers for selecting the tune that will come out the receiver box (the one with the speaker). I'm not sure why these jumpers aren't on the receiver box, that would make it possible to make the transmitter box look a lot nicer, which is important, because it won't fit in my existing doorbell housing, and is dangling off to the side.Seems like a few better design decisions would make this product perfect.- Put the tune selection capability on the receiver unit- Make the transmitter unit pretty enough to look ok mounted next to the existing doorbell