... 3m 5,Display unit with built-in buzzer 6,2,3,4 sensors for option 7,Display size: 132*25*22mm LED Parking Sensor System ... into reverse. 2. Show distance by multi-functional ultra-thin VFD display, Bi Bi voice warning. 3. Embedded detector sensors (which ... in the display housing. 8.6-sensor model, 8-sensor model could also be made of Speaker, Wireless type parking sensor.LED Parking Sensor System also ...