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© 2017 Kel-Tec CNC Industries, Inc. 8 LAW ENFORCEMENT TECHNOLOGY AUGUST 2017 www.officer.com LASER jammers use either infrared LEDs or LASERs in the same 900nm spectrum as police LIDAR . Generally, most LED-equipped jammers are not as powerful as jammers with actual LASER diodes and will have more limited effective range. All jammers use a dark red plastic lens that is designed to block visible light and allow infrared light to pass through. These lenses are usually convex in shape over part or all of the jammer head. This shape helps direct incoming LASER energy to the jammer's IR sensor. You will find jammers mounted in the grille area of the vehicle either in the center or below the bumper. Also look carefully at the license plate frame itself as some jammers include a license plate frame to help mount and disguise the jammer head itself. For a jammer to work it must have an unobstructed view, therefore they will always be visible. You will find jammers on all kinds of cars, vans, and trucks so do not limit your attention to only high-end sports cars. Less frequently, jammers can also be found in the rear license plate area. The majority of the rear mounted jammers are the bar-style mounted on the license plate; however, you may find one or more of the individual-head jammers placed on the rear of the car too. All that glitters Don't confuse the license plate mounted automated toll pass devices for LASER jammers. The easiest way to tell is that all LASER jammers will have a cord attached to the jammer head; whereas toll passes are cordless. The other distinguishing feature is that toll passes are missing the dark red translucent lens. W hen a bright flashlight is activated and placed on the lens you should be able to partially see through it. At first glance, aftermarket backup cameras may also be confused with jammers. Backup cameras have a cord, are shaped similarly to a bar-style jam- mer, and are mounted in exactly the All LASER jammers will have a cord attached to the jammer head, which distinguishes them from automated toll pass devices which are cordless. Toll passes also do not have the dark red translucent lens that LASER jammers have.