As promised, here is the link to the report I generated on the initial failure mode of the PulseOx 7500:

http://video.google.com/videoplay?docid ... 5219&hl=en

Keep us informed if you find another unit thats any good. As I said, I will go to my pulmonary dr. to see about a home test. He is a pretty smart guy. Again...good luck with it I picked up a Respironics 920M on Ebay for US$227.00. I'm happy to say it works fantastic. I couldn't believe the differen...

Any chance of getting your money back? Fortunately the distributor I bought the original unit from gave me a full refund. Yes, the software is pretty bad, but my main complaints were with the hardware. Actually, from what I've read, using reflective technology is iffy at best. In a 3 hour sleep stu...

I've gone through two of them and finally gave up. The first was DOA (Defective on Arrival), the second died after a week's use. Even while it was 'working', the results were poor. Both the manufacturer and distributor told me I was the only customer that had hardware failure. I wonder...

a lot of those adapters are made for PDA's like the Belkin and not truly RS-232 devices. I found that out the hard way buying 2 of those Belkin duds, both worthless. The ONLY one I found that actually worked was the I/O Concepts adapter from CompUSA ($29.95). Please give me the P/N of the I/O conce...

a lot of those adapters are made for PDA's like the Belkin and not truly RS-232 devices. I found that out the hard way buying 2 of those Belkin duds, both worthless. The ONLY one I found that actually worked was the I/O Concepts adapter from CompUSA ($29.95).... . Thank you for the quick reply. You...

Has anyone found a USB-to-Serial adapter that works with the 920M or similar pulse-oximeters? The problem is the 920M outputs TTL levels, whereas all of the adapters I've tried require true RS-232 levels.