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A small light (dot) indicates proper functioning of the system after being activated Digital distance display of obstacle LED#####s (green,yellow and red) indicate different distances as well as orientation of the obstacle Different alert beeping intervals indicate different distances of the obstacle Low power expend design Auto run when car begin to reverse,3 kinds of alarm voice.Buzzer Outside and alarm volume>78DB Errors prevent technology 8 sensors Detecting range from 0.1¡«2.0M The detector endure temperature: -20¡«80¡æ speech (offer)
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