The LED light located on the front of your alveoair® spirometer device, and its lighting patterns, provide you with feedback about which processes the device is completing at that point in time.

  • Upon inserting the batteries (new/replace), device BLUE LED blinks twice

  • When a user starts the test, the device LED switch on until the test reading is completed.

  • Upon completion of the test, the BLUE LED switched off.

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