... .Parking Sensor System 2.Parking Sensor 3 color LED display&rear 4 sensors 3.BiBi-alarm sound or voice 4.CE,FCC,e-mark,RoHS parking sensor ... : LED Parking Sensor ... ,Display unit with built-in buzzer 6,2,3,4 sensors for option 7,Display size: 132*25*22mm LED Parking Sensor System Features ...