Designed for patients with obstructive, mixed or complex sleep apnea with comorbidities, this BiLevel-ST device offers maximum flexibility with settings and indication-specific pre-settings (SCOPES). Furthermore, the automatic backup frequency, apnea differentiation with FOT and many comfort functions ensure safe, effective and whisper-quiet therapy. BiLevel therapy device for the treatment of patients with obstructive, mixed, orcomplex sleep apnea and a high and/or fluctuating pressure requirement, poor CPAPcompliance, central apneas, sleep-related or position-dependent hypoventilation (e.g.,OHS), respiratory insufficiency, coprevalent respiratory insufficiency (e.g., COPD/overlap). The device has different pressure levels during inspiration and expiration anda backup frequency for the treatment of central events. Dimensions: W x H x D in cm 17 x 13.5 x 18Weight: 1.4 kgAir pressure range: 700 cmH2O to 1060 cmH2O corresponds to a height of 3000 m above sea level