<p>The unit has a central body that is symmetric to an axis that runs downwardly in a longitudinal direction. A lower control panel (20) is arranged below a non-rotating central panel (10), and lateral control panels (30) are arranged laterally to the central panel and the lower control panel. A handle (40) extends laterally and then upwardly and ends in a level of an upper edge of the central panel, so that a free space is formed between the handle and the central body. The central panel is provided with a glare shield (15) at an upper edge of the central panel.</p>
