Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Did not work; had to return it for a refund.

Well, you get what you pay for. When will I learn that lesson?Biggest issue: the battery would not stay in place. The metal bits at the end that hold the battery in place, weren't designed in a way to keep the battery from popping out. So, after fumbling and trying to tape the battery in place, I finally got it to stay put. But then, the chimes would only OCCASIONALLY work. Very unreliable. The chimes also sounded tinny. Don't even get me started on having to pull out the miniscule pins to change the chime patterns. This is a terrible product. For those for whom it worked, I consider you guys lucky people. If you're not interested in pressing your luck, I suggest a better product made by someone else.