What does "Move to Fresh Air" printed on my carbon monoxide alarm mean?

The phrase “Move to Fresh Air” that is printed on the face of newer carbon monoxide alarms is a reminder to move all family members to a well ventilated area with fresh air if the alarm sounds. Please note that this does not mean that you should unplug or move the CO alarm itself. When an alarm sounds, make sure that everyone in the building is evacuated to an area with fresh air.