The FreeStyle Libre 2 system has three optional alarms:
• Low Glucose Alarm - an alarm will notify you when your glucose falls below a level you set
• High Glucose Alarm - an alarm will notify you when your glucose rises above a level you set
• Signal Loss Alarm - an alarm will notify you when the glucose alarms you set are not available because your Sensor has lost communication with the Reader or app for 20 minutes