... , Compatible with any Car, Bus, Truck2, Automatic Detecting Obstacles once Reversing Gear is Activated3, Digital Distance Display of Obstacles Buzzer: Built-in ... on Bumper, same as Original Fitting9, Waterproof and Replaceable Sensor Technical data: voltage9DCV-15DCVRated voltage12DCVPower costMax 1.5WRespond distance0.4m2 ... box:Assemble step 1:Assemble step 2: Parking sensor with 6 waterproof sensors