... System 2.Parking Sensor 3 color LED display&rear 4 sensors 3.BiBi-alarm sound or voice 4.CE,FCC,e ... ,Display unit with built-in buzzer 6,2,3,4 sensors for option 7,Display size: 132*25*22mm LED Parking Sensor ... -thin VFD display, Bi Bi voice warning. 3. Embedded detector sensors (which requires installation into your rear bumper). 4. High-tech ...