The K40 Defuser laser jammer was tested by a group of enthisiasts from the popular radar detector and jammer forum http://www.radardetector.net. An off duty police officer assisted during the test and operated the laser guns. <br /><br />The K40 laser jammer failed to jam any of the police lidar guns that were shot at the vehicle during their test. <br /><br />The K40 Calibre radar detector was also tested and performed very poorly. <br /><br />There are several websites that review this device in more detail such as http://www.RadarTest.com and http://www.RadarRoysBuyersGuide.com
