The Respironics M Series Remstar DS200 is a CPAP unlike any CPAP Respironics has manufactured before. The M series CPAP’S are the top of the line CPAPS from Respironics. Their sleek, small and easy to use design is made to fit the way you sleep, quietly and comfortably. The Respironics DS200 comes complete with C-Flex which reduces pressure upon exhalation making this unit one of a kind. The New M Series Remstar offers phone in compliance reporting, Just pick up a phone, speak with a customer service representative and get all the data you need to bring to your physician