Kit includes: 4-sensors LCD main unit, 4 black sensor, very efficient loudpseaker, CAM-308 LED 18mm camera with night vision function- extra LED diodes guarantee extra lighting. 4,3" TFT display of high quality shows view perfectly (it shows view which is directly behind the car). Park assist system is a device that supports parking and reversing the car. It works on the principle of sonar - emits ultrasonic waves that allows us, after reflection from the obstacle, to conclude what is the distance between car and obstacle. At the time of withdrawal device correctly detects obstacles and warns the driver. Full specification: Resolution 480 x 234 Camera CAM-308 LED 18mm modern camera with "night vision" function- IR diodes guarantee extra lighting Alarm Alarm B-B sound Range/working sensitivity 0-2,5m Power supply 12V Working frequency 40KHz Work temperature -30C +70 C