The MPH Ranger EZ Fixed-Mount Police Radar is the only ranging directional traffic radar on the market. Using MPH's unique Advanced Target Identification technology, the device confirms your visual traffic observations by accurately identifying the strongest target, the fastest target, target directions, target distances, and targets in opposite and same-direction traffic. The MPH Ranger EZ Stationary Radar Gun also includes SafetyZone, MPH's officer safety alert mechanism. Safety Zone activates an audible warning to alert officers to potentially life-threatening high-speed vehicles approaching from behind their patrol vehicle when the officer is standing on or near the roadway. The loud, distinctive alert signal will trigger whenever an approaching vehicle exceeds the speed and distance thresholds preset by the officer. The MPH Ranger EZ Speed Radar is everything you need in a radar and more!