... LED(4)Speaker Warming Led Display Car Parking Sensor System(four sensorsUnparalleled Competitive Advantages:Ultra low ... )Small orders and ODM/OEM acceptedKey Functions:Parking sensor, auto-start when back up.Obstacle distance ... “1.0m”, “1.5m” can tell different parking status user-friendly4 ultrasonic sensors with numbers and colors ... warranty,LED Digital Display Voice Parking Sensor System,4 sensors,