LoBattery wrote: I don't see what removing the registration sticker does, you can easily get it in the clinical menu in About.
You can get the serial number off the Menu but not the DN code. You need both to register for myair.
The device number (DN) is a 3-digit code that can be found on the label at the back of your device. It provides additional security and is similar to a CVV code on the back of a credit card.