DESC: The Escort Passport 9500i is one of the most reliable radar detectors available on the market. The Passport 9500i can automatically vary its sensitivity based on the speed of your vehicle. At interstate speeds, all radar bands are operating at full sensitivity, providing the best possible performance. At really slow speeds, like parking lots and stop lights, the sensitivity is turned down to almost zero. No more irritating alerts when you are going below the posted speed. The result is real-time on-demand radar protection.