18mm 20mm 22mm distance radar alarm parking detector warning range front rear car reverse camer ~

This system including 7 inch monitor, rear view camera with parkinbg sensor, the radar connect with host by wire link, LED screen powered by ACC, DIY operation. LED screen with three color strips:red,yellow,green, to remind you the safe distance when reversing. The alarm has four stages :BI BI BI BI —–  left and right remind you the safe distance between right and left when backing up according to color strips,makes it easier to park your car. The probe is waterproof,with flat detection angel and 20000 times life,several kinds of color to choose,  one year warranty.
1.4 sensors install behind
2.behind 4 sensors working when reversing
3.7 inch monitor and HD camera
4.Left and right obstacle indication
5.Alarm by buzzer