Detailed Description 1)two,fourorsixsensorisavailable 2)thesystemwillautomaticallystartupwhenreversed 3)radardetectdistance,voiceindicati 4)BiBiBialarmsystem 5)suitableforanyenvironment 6)Allkindsofsensorcolorsandstylesareavailable 7)Highqualityandeasytoinstall7.2-8sensorsareavailable 8)workingvoltage:DC12V 9)maxpower:5W 10)workingtemperature:-40 80 C 11)indicationDistance:0.2 -2.0m 12)alarmdistance:0.4m 1.5m 13)anycolorsensorisavailable,suitableforanycar 14)theclosertheobstacle,thefasterthealert,keepfrequencealarmingtoindicatesafetyzone,cautionzone,dangerzone.