Thanks, Pugsy, for that information - very useful indeed!

Hmm. According to the clinician manual, there are 30 days...and that's it. That 30 day period can be divided up into 10 periods of 3 days each. For "Auto-Trial" to work, it has to be run for a minimum of 12 hours, with at least 4 hours of consecutive time. Once 30 days pass, the machine will revert ...

I've been using them for years - no problems have been encountered (outside of the fact that I can't hear the phone when the plugs are in )

Greetings! Well, I'm a new forum member, but an experienced (??) (if one can say that) CPAP user. I just had my old M series Remstar replaced, with a System One Remstar Pro Cflex Plus...heated hose ... humidifier...dancing girls (okay, that wasn't included ..must be those lucid dreams ... ) I've ins...