Both CPAP devices SleepCube Standard Plus and Auto Plus with Smart Flex comfort feature are standard. SmartFlex lowers the pressure during exhalation of the patient; For the user this means a significant gain in comfort. Smart Flex has three settings: Each of these settings reduces the CPAP pressure during exhalation to 1 cm H2O. SmartFlex can also be used for the ramp period making it possible for the patient to fall asleep and stay asleep throughout the night. If apnea, hypopnea or snoring is detected the SmartFlex switches off, and then adjusts automatically when after a certain period this no longer occurs.