Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very hard to get to work right

This scanner works well when it works. But as has been written about this and other Bearcat scanners it is tricky to use, program, etc. I had it working and scanning then when turning it on again it wouldn't scan. Probably hit one wrong button, but after half an hour of trying every option you just give up. There are a lot of features on these scanner and that may be the problem, one wrong key and your dead.