1. parking sensor with LED display 2. high quality ,fast delivery, reliable warranty LED parking sensor,1. car rear 4 parking sensor system2. Self-test ... function activated when reversing3.Display precision: CM level4.Sensor detection range:0.5cm~2.5m5.Display rang:28cm~2 ... built in&digital readout11. Power input 9.~16V DC parking sensor with LCD screen