... sensors 4.CE,Rohs,FCC Wireless LED Display Car Parking Sensor 1,To enter the reverse, the radar system to automatically enter ... 5.Clear pictures and exact obstacles distance indication. Specification:1,No display 2,Step-up Buzzer alarm3,Detective distance from ... 1.8m to 0.3m 4 ,2,3,4,6, ... ctnMEAS:53*32.3*42cm Wireless LED Display Car Parking Sensor