Alert Stage Distance Area Sound Distance Display 1 1.5~1.1M Safe Area Bi...Bi... 1.5~1.1M 2 1.0~0.7M Alarm Area Bi..Bi.. 1.0~0.5M 3 0.4M~0.6M Dangerous Area Bi.Bi.Bi. 0.4~0.6M 4 0.4M Dangerous Area Biii..... 0.0&Flashing Switch on automatically when reverse gear is engaged Four sound warning stages,different alert beeping intervals indicate different distances of the obstacle 2/4 recessed ultrasonic sensors designing for optional Easy installation Microchip Intelligent computer control Auto-detecting and auto-alarming mechanism Sensor color could be customized CPU(Microchip) from U.S.A Model No. Sensor Control Box Display Buzzer Speaker HX-2552 2 1 0 1 N/A HX-2554 4 1 0 1 N/A
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coolant sensor , crank sensor , Crank Shaft Sensor , egr sensor , electronic sensor , s3 fuel sensor , Fuel Sender , fuel sensor , fuel sensor assembly , hall sensor , head lamp sensor , car head lamp sensor , impact sensor , mark sensor , oil level sensor , throttle sensor