After 14 days of wear, the reader notifies you that the FreeStyle Libre 2 sensor has ended and should be replaced with a new sensor.
The FreeStyle Libre 2 sensor automatically stops collecting glucose data and should be removed 14 days after being started. Three days before the sensor ends, it tells users with the first scan of each day. In the final 8 hours, it tells users with each scan. The sensor should be replaced with a new sensor.