I got a radar detector in this brand and literally everything set it off it would go off every once in a while when there were police which save me a couple of times but some cups didn't set it off so sometimes you didn't know if it was the metal detectors on the school you just passed setting it off for the next car do you setting it off there's so many different things now that have electronica cinemas it make these go off and you can tell by the different I got a radar detector in this brand and literally everything set it off it would go off every once in a while when there were police which save me a couple of times but some cops didn't set it off so sometimes you didn't know if it was the metal detectors on the school you just passed setting it off for the next car do you set it off there so many different things now that have electronics in them that make these go off and you can tell by the different Signals at some point but sometimes it would say what it says when is usually there was a cut up and sometimes there wouldn't be a cop so I felt like it was kind of unreliable maybe if I bought a more expensive one I wouldn't have that problem but I did spend about $50 on it and I just can't justify spending more than that on a radar detector at that point I just rather not speed