Why does my breathalyzer display "FL" or “FLo”?
FL/FLo stands for "Flow Error" which simply means the unit is not getting an adequate breath sample and you need to breathe harder and/or longer on your next test. Make sure that you exhale steadily into the unit for a full 5 to 6 seconds. Your BACtrack will beep while you are breathing into it - don’t stop breathing! The beep indicates that the unit is getting a good breath sample, and it will stop when it has enough air to analyze.
If you continue to receive the flow error after following the steps above, please contact our support team by phone (415-693-9756) or email (firstname.lastname@example.org).