1. Parking Sensor with 6 sensors 2. Alarm by English ... and right obstacle indication Main features: 1, Compatible with any Car, Bus, Truck2, Automatic Detecting Obstacles once ... Detector Sensors available for Reverse Needs8, Installation on Bumper, same as Original Fitting9, Waterproof and Replaceable Sensor Technical data: ... Assemble step 1:Assemble step 2: Parking sensor with 6 waterproof sensors