This is a ResMeds Bi-level unit that also has the cpap mode as well in the software.
This unit is for those who need not only the intake of air like a cpap provides but also with the Bi-level mode it provides the extra help of exhaling of air to help you breath the air out for a more normal breathing pattern, perfect for those with lung weakness and breathing issues.
I have listed more info in the pictures of the ad. New unit. Sleep apnea
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