Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Works well if you understand what it can and can't do

This radar detector has performed very well for me so far. Yes, it will go off when it senses radar from automatic doors, they all do. Some other reviewers complain that they passed police cars without this detector alerting them but you have to understand that lots of times they're radar isn't on until they see a "likely" target. I LOVE the automute feature which automatically reduces the volume of an alert to almost silent after four chirps. This is especially helpful for those annoying auto door "false" alerts. I have experienced excellent range for speed traps especially the officers who just leave the radar on full time. I am very satisfied with this detector and would strongly recommend hard wiring it and using the visor clip. The clip does a great job of keeping the detector out of the way and hidden from prying eyes while I'm away from my vehicle.