LED parking sensor system

FUNCTIONS:

Characteristics: 
1.Digital display is intuitionistic,compatible
  with indicator light,helps drivers know about
  the obstacles and warn them of parking.
2.suitable for 2 or 4 sensors

TECHNICAL SPECIFICATIONS: 
Technology data: 
1.Working voltage:DC12V2V   
2.Max power:Pmax<5W
3.Working temperature:-35~+80 
4.Display distance:S3.0m
5.Alarming distance:S1.5m   
6.Alarm Voice:50dB