I have a Respironics M-Series Bi-Pap Auto and it uses the older Smartcard. The first report I pulled brought up data from Jan 22 - July 23 2014. Was kind of amazed it had that much data.
In any case, I now have a new machine that uses an SD card and while I plan on keeping the M-Series as a backup, I really don't see any need to keep the card reader for it.
I was amazed at how expensive the critters were with many asking in the $80-$90 range but found a discounted price of a new unit.
DT3500 smart card reader
DECIDED TO KEEP
Smart Card Reader for Respironics Machines like the M-Series.
DOES NOT WORK WITH SDCARDS...
Have inserted and read a card with it perhaps up to 20 times.
Includes:
o Cardboard box it came with
o Unit with attached USB connector
o Sheet that really doesn't provide any real info on it.
o Does not include a Smartcard.
Paid $35. Asking $30.00 and will include USPS Priority Mail delivery anywhere in the
continental US to a verified Email Address.
Pics:



Works with card type on the left, not the SD card on the right:

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The other thing that I was concerned about was what my O2 levels were when I was using a machine. I had never really thought about it and wanted to be informed before seeing the sleep Dr. While I already have an O2 finger sensor, it didn't record anything, and I really was interested in what that looked like.
CMS 50D+ Blue Finger Pulse Oximeter with USB and Software
PENDING SOLD.
To purchase an Item:
Items are available for purchase now. If you are interested, send me a PM and I will communicate with you via real email. Payment preferred via PayPal, I have a merchant account and I will ship the next business day USPS to the verified address.
I will remove items as soon as they are sold.

