[purpleRac3r]

Most of the high end detectors like Valentine 1 and some Escort model include laser detection as well as radar detction. No detector is capable of eliminating "false" alerts entirely. "False" alerts aren't actually false, as they indeed are detecting signals in the bands they are designed to detect. The catch is that so many devices other than police radar guns use the same bands. These include many automatic doors at retail stores, adaptive cruise controls on some cars, back-up assist sensors on many cars, and my experience has seen something on a number of different over-the-road semi trucks also triggers my detector, though I don't know what that might be. The key to using a radar/laser detector comes with learning how your particular detector reacts to the non-police gun sources. And they will act differently. Also, becoming familiar with stationary source locations, like store doors is helpful. But take note, even if you know an area's stationary sources, unless your detector can tell you how many signals there are, you many not know until too late that a cop is camped our near a grocery store. I like and own a Valentine 1 for that very reason. But again, officers using instant on make detecting them much more challenging, and sometimes impossible until too late. But so far, so good for me - my V1 has helped a number of times to save me from a ticket. Well worth the learning curve in my opinion!