1. LCD Screen, different background light (Green, Orange and Red, which based on obstacle distance) 2. Built in English voice reporting the reversing distance 3. The screen shows you the direct information when you reversing. 4. Three ranges of volume adjustable, eight-leveled rectangle detection displaying the obstacle obviously. 5. Automatically adjust the brightness according to the situation, never dazzle at night. 6. Anti-jamming technology, low error report. 7. 2/4/6/8 sensors are optional. How does Minpn control quality? Quality always comes first. 1.IQC inspects every new-coming materials according to AQL standard 2.AOI auto inspects during SMT production 3.Experienced workers produce and pack goods according to strict operational standards 4.Professional QA/QC team to ensure the quality during every process especially technical testings 5.Full inspection before delivery Parking sensor system is supplementary safety equipment that is specially designed for car reversing.There is hidden trouble while reversing because of blind zone behind the car.After installing parking sensor,when reversing: *LCD system displays the distance of obstacles on the screen with voice alert,or can be matched with four beeping tone as a reminder. So that it is more relax and safety while reversing.