Functions:Electromagneticparkingsensordetectsobstaclesbehindthecaraccordingtothereflectionprincipleofelectromagneticwave,thesystemcomprisesofanelectronicbox,anantennasensorandabuzzerordisplayFeatures:1)Detectioninalldirectionswithoutdeadangle2)LED3colors(Green,Yellow,Red)displaystoindicatethedistanceofobstacles.2)Totallybuilt-ininstallationwithnobadeffecttothecarappearance3)Thesensorantennaisinstalledinsidethebumper,noneedfordrillonthebumper4)Duringapproachingtoanobstacle,theelectronicunitactivatestheacousticsignalingwith3typesofsignals-Acontinuoussoundof"beep"approximatelybetween0-0.3m --LEDlightingwithredcolor.-Ashortintervalsoundof"beep"approximatelybetween0.3-0.5m--LEDlightinginyellowcolor.-Allongintervalsoundof"beep"approximatelybetween0.5-0.7m--LEDlightingingreencolor.Technicalcharacteristics:Workingvoltage:DC12V2V Currencyconsumption: 50mAWorkingtemperature:-20~+70°CDetectionrange:approximatelyin0.7m