... Parking Sensor System details: 1,Numeral and color LED display 2, Step-up buzzer alarm 3,Left and right ... obstacle indication 4,Numeral display from 1.8m to 0.3m 5,Display unit with built-in buzzer 6, ... 2,3,4 sensors for option 7,Display size: 132 ... 2. Show distance by multi-functional ultra-thin VFD display, Bi Bi voice warning. 3. Embedded detector sensors ...