What is the timer counting on the Home screen?
The timer counts up or down depending on the last breath sample.
If the last sample displayed was less than 7 ppm, or green, the timer will increase in seconds displaying how long you have been in the green range. Subsequent samples within the green range will increase your time.
If the last sample displayed was greater than 7 ppm, or within orange or red, the timer will count down. The time displayed is an estimate of how long it will take for you to blow a green sample if you do not smoke during the time period.
