DKL treatment units have been designed in such a way that thanks to be combined movement of seat and back rest, there is no compression or stretching effect for the patient. When the chair is moved for the patient to comfortably get on or off, the entire foot of the chair is automatically moved down. D1-SOLO. Optionally, the treatment chair can be equipped with arm rests, a height-adjustable tray and an operating lamp. Lowest position: 395mm Highest position: 730mm The stored programmes can be activated by briefly tapping the joystick or by pushing the buttons at the back rest. Pressing the joystick for a longer time will move the chair manually into the desired treatment position.