Once fitted, you will wonder how you ever reversed without them !Get audible warnings if there are people or obstacles in your way when reversing.MPR-SW – White sensorsMay be painted to colour match your vehicleAudible WarningsAt approx 1.5 metre the buzzer starts to sound slowly As you get closer the buzzer sounds faster At approx 0.50 metre the buzzer sounds constantly, so stop ! *Detection distances vary according to fitted height and obstacles being detected.Note: Reversing sensors are a driving aid and the usual driving precautions should be taken whilst reversing. Sensors may not detect all possible objects/obstructions. Detection distances are approximate.