... .CE,FCC,e-mark,RoHS parking sensor : LED Parking Sensor System details: 1,Numeral and color LED display 2, Step-up buzzer alarm ... .3m 5,Display unit with built-in buzzer 6,2,3,4 sensors for option 7,Display size: 132*25*22mm LED Parking Sensor ... into reverse. 2. Show distance by multi-functional ultra-thin VFD display, Bi Bi voice warning. 3. Embedded detector sensors (which requires ...