car parking sensor car parking sensor systemMain features:1.Auto activate when engage the reversing2.Two/Four detector available,all-round detecting;3.Display in blue, Orange,red,LED display in Left/Right Obstacle;Specification:1.Working voltage:12 V2.Working temperature:20-+85°C3.Detecting range:0.3–1.5m4.Voice volume : ≥73dB WS-098D4 car parking sensor system