How does the Versa 2 count stairs?

[BC_Ryan]

I just completed my daily treadmill walk. Somehow, after going DOWN one flight of stairs to get to my treadmill, completing my treadmill walk, and returning upstairs, I managed an 8 flight stair count. In fact, I managed that BEFORE going up an actual flight of stairs (which wasn't counted).

So, how is it possible my Versa 2 is counting flights of stairs while I'm walking on a treadmill? Can it detect the rise of the treadmill (my routine starts at 10%, and decreases there until finished at around 35-40 minutes...but there's no connection between either my phone, or my Fitbit, to my treadmill)? 

[SunsetRunner]

Hello @BC_Ryan 

Floors are calculated by changes in the air pressure. That can include windy conditions and even strong incoming storms will effect the air pressure the Versa 2 is tracking. Floors are awarded when your Versa 2 detects your moving and the pressure changes enough to believe at least 10 feet has been climbed. 

Like you I sometimes receive an unexpected floor count when I do my treadmill HIIT for an hour. I incline between 5% (low intensity) to 15% (high intensity) Sometimes it doesn’t give me any floors but other times I might get as many as 10 floors. It could even being a fan blowing my direction hitting my Versa 2 just right enough to trick it to believe I climbed a flight of stairs. 

if you want to remove the few unexpected floors you can do so by following the instructions here: https://help.fitbit.com/articles/en_US/Help_article/1306.htm Keep in mind that you can’t delete steps and floors; instead, log a non-step-based activity such as driving to override the steps or floors. 

I don’t personally remove mine when I get a few unexpected floors but the choice is certainly yours. 

😃 I hope this provided you the best answer to your question. Please let me know