... Sensor With 4/6/8 Sensors parking sensor system Product describe:1,Numerical and color LED display. 2,Step-up buzzer ... 1.8m to 0.3m.5,Display unit with built-in buzzer. 6,2,3,4 sensors for option. ... Sample order lead time around 2-3 working days, mass order takes 3-5 working days to delivery. Delivery ... . Our Awards :4. Our products technical patents 5. Our after sales service:Order StatusAs soon as the ...