Abbott FreeStyle Libre 2 User Manual page 188

alarms the user if the alarm is turned on. If connection is lost between the Sensor and the Reader,
up to 8 hours of glucose results can be retrieved by performing a scan with the Reader. The Reader is
designed to only accept radio frequency (RF) communications from recognized and paired Sensors.
QoS for the FreeStyle Libre 2 app and Sensor wireless communications using NFC is assured
within the effective range of 1 cm between the Sensor and phone. QoS for the FreeStyle Libre 2
app and Sensor wireless communications using BLE is assured at regular 1-minute intervals. If
connection is lost between the App and Sensor for 5-minutes, the alarms unavailable symbol
displays. If connection is lost for 20 minutes, the App alarms the user if the alarm is turned on. If
connection is lost between the Sensor and the App, up to 8 hours of glucose results can be retrieved
by performing a scan with the App. The App is designed to only accept radio frequency (RF)
communications from recognized and paired Sensors.
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