1.Numeral and color LED display,with buzzer built-in   
2.Alarm by three step Bi-Bi sound                                                                                  

3.Left and right digital show obstacle indication         
4.can work with 2 or 4 sensors for car rear,and with 6 or 8 sensors for rear and front.    
5.sensors can add waterproof connector,easy to replace when defective                                                              

6.Measuring the distance by sensors,with detected distance from 0.3-2.0m for rear                                          

7.Working Voltage: 12V DC                                                                  

8.Working Temperature: -40 ～ +80℃  
9.Display size: 96*27*20mm
10. can work with different led/lcd displays