Pugsy wrote:If you found the sticker on the bottom of the blower and it starts with 2009...that pretty much means that year. The coding goes year/month/day.
When your first plug your machine in to electric source and it lights up..the firmware version will show up.. What does it say?
20120216, and it's backlit. Annoyingly backlit... Firmware is v2.51
Yours is a brand new machine manufactured on Feb. 16, 2012, with the latest firmware.
It is true that the System Ones came out in 2009, but they are still the most up-to-date models in the Respironics line. The Resmed S9 series came out sometime in 2010, so as a model line, it is roughly the same age; the S9s are still the most up-to-date models in the Resmed line.
As for the annoying backlit part of the machine: Is it the LCD? That should turn off a few seconds to a couple of minutes after you start therapy.
Or is the annoying backlit part the little wave icon that indicates the humidifier is on? On my April 2011 System One machine, I can turn off the backlit lights for the humidity level numbers, but the little wave icon that is just below and to the left of the large knob will not turn off. And it is annoyingly bright. I slapped a piece of black electrical tape on top of that icon to block it off so it doesn't keep me awake.