A modular power device is used for mounting on a main plate. The device is characterized in that it comprises a flexible or rigid mobile transport structure bearing at least transport means for receiving at least a card in at least a supply station and carrying the cards to one or several processing stations. A light detection and ranging system includes the optical amplifier coupled to an optical source and one photodetector. The cylindrical plug wall has a diameter substantially equal to the diameter of the cylindrical internal chamber wall. The dishwasher includes a first wash zone defined by the first upper and lower racks and a second wash zone defined by the second upper and lower racks. The second bearing is supported by an annular composite race member formed by a metal annular inner race member joined with a resiliently deformable annular outer member.