Smart ParkingSensor with Nice LED Display specifications: 1. Digital LED in arc surface, matches perfectly with car internal circumstance. 2. Alarm by Bi-Bi sound; 3. LED display withfour colors (Red & Yellow & Green& Blue); 4. Crescent shape digital display screen. 5. Fit any make of car or vehicle, van, caravan, trailer and horse boxes. 6. Waterproof and shockproof, anti-fault information technology 7. More-stable two-angle sensor,horizontal and vertical for detection 8. Intelligent identification of the rear obstacles position 9. All kinds of sensor colors and styles are avaiable 10. High quality and easy to install 11. Human speaking warning is optional Technical Parameters: Rate voltage 12V Operation voltage range 9-16v Rated current 20-200mA Detecting distance 0-2.5m Working temperature -30 +70 degree Display working temperature 0 +60 degre Ultrasonic Frequency 40HKZ Package Includes: 1x LED display monitor 1x Main control box 4x Parking sensor 1x Power cable 1x 22mm drill 1x English manual Optional Sensor Colors: For sample order, optional sensor color is: silver,white,black. These are frequently used colors that we have in stock. After payment on samples, we will send you the default black, if you need other color, please notify us. Thanks!For quantity order, we have multiple sensor colors for option, please contact us for more details.