Weinmann Somnovent AUTO-S is a bipap device. The inhalation pressure is independent and by providing the lower exhalation pressure, the device allows the patient to breathe freely. For additional security, consider the so-called plan frequency. If the central apnea is present, the patient is triggering the system and the device automatically detects. Other features include improved noise stability and improved pressure stability in the sleep laboratory designated treatment settings. Somnovent AUTO-S Bipap guarantees a restful sleep comfort at every pressure level and provides the patient's partner a peaceful night's sleep.