Designed to treat Obstructive Sleep Apnea (OSA), the S9 Escape™ provides Continuous Positive Airway Pressure (CPAP) with Easy-Breathe Expiratory Pressure Relief (EPR) to prevent the collapse of your upper airway during sleep.As the standard CPAP model of the S9 Series, S9 Escape offers excellent value with innovative features including Climate Control and the enhanced Easy-Breathe motor. Together, these technologies deliver the S9 promise of more comfort.Optionally, it is available the integrated humidifier 5i, which helps to alleviate discomfort and to relieve symptoms such as nasal stuffiness, mouth dryness and thich nasal secretions.