Simple and easy
"The SD card is very affordable. Very simple to use - just plug it into the SD slot on the Airsense 11. To review the data simply plug into your computer and using OSCAR down load to the computer and excellent and detailed data is ready to review. OSCAR is free open software. Reviewing the data of what happens each night has helped me zero in on getting the right pressure levels. Highly recomed the SD card. However, it is not necessary nor essential for using the CPAP machine."
