What is the maximum distance between FreeStyle Libre 3 Plus Sensor and FreeStyle Libre 3 app or reader in order to receive the alarms?
For you to receive alarms, they must be on, and your FreeStyle Libre 3 app35 or reader should be within 10 metres (33 ft) of you at all times. The transmission range is 10 metres (33 ft) unobstructed.
If you are out of range, you may not receive glucose alarms.
To prevent missed alarms, make sure that your smart phone35 or reader has sufficient charge and that sound and/or vibration are turned on.