... .0m 3)self-check function 4)100% high quality guarantee lcd parking sensorFeatures:Specification: Constitues:1 control box, 4 sensors, ... away 2 meters from obstacle, digital LCD shows obstacle place and distance * Install LCD Fix LCD with 3M double glue sticker on ... wire, then connect detector, control box and color digital LCD described as illustration. Finally connect the positive and negative power ...