DROWZLE PRO is indicated to record a patient’s respiratory pattern during sleep for the purpose of prescreening patients for obstructive sleep apnea syndrome. The device is designed for use in home-screening of adults with suspected possible sleep breathing disorders. Results are used to assist the healthcare professional in determining the need for further diagnosis and evaluation. The system is not intended as a substitute for full polysomnography when additional parameters such as sleep stastages, limb movements, or EEG activity are required