What is the maximum distance between Freestyle Libre 2 Sensor and FreeStyle Libre 2 app or reader in order to receive the alarms?
For you to receive alarms, they must be on, and your FreeStyle Libre 2 app34 or reader should be within 6 metres (20 ft) of you at all times. The transmission range is 6 metres (20 ft) unobstructed. If you are out of range, you may not receive glucose alarms.
To prevent missed alarms, make sure that the smart phone34 or reader has sufficient charge and that sound and/or vibration are turned on.