NICE now recommends Hybrid Closed Loop (HCL) systems for selected people with type 1 diabetes1

The new NICE technology appraisal recommendation means more people with type 1 diabetes qualify for HCL systems. Choose the FreeStyle Libre 3 sensor which is authorized to work with the mylife Loop2 AID system. Find out more.

1. NICE [2023] Hybrid Closed Loop systems for managing blood glucose levels in type 1 diabetes. [GID-TA10845]. Visit

2. FreeStyle Libre 3 is authorised to work with the mylife Loop automated insulin delivery system, including the mylife CamAPS FX app and mylife YpsoPump insulin pump. For use of FreeStyle Libre 3 sensor with the mylife Loop, refer to the labeling provided with the mylife CamAPS FX app.

Need help with your sensor? Fill in our quick Online Sensor Support form.

A member of our Customer Service team will then get in touch to help.

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Optional Alarms

with the FreeStyle Libre Systems

With our optional alarm function, you can choose to receive a message the minute your sugar level is too high or too low using the FreeStyle Libre systems.*


How it works

When you turn on the glucose alarms, you'll receive a notification when your glucose reading goes above or below your target range.

It even works when you're sleeping or when your smartphone is in Do Not Disturb mode. When you receive a glucose alarm, you can tap the notification to immediately check your glucose level and take necessary action.

A boy sleeping in his bed with her sensor visible on his arm.


How to set alarms on the FreeStyle LibreLink app

To receive alarms on your compatible smartphone, you must set it up with your new FreeStyle Libre 2 sensor.^



How to set alarms on the LibreLinkUp app§

Even if the FreeStyle LibreLink user has turned off their alarms, caregivers can set their own alarms and notifications based on their loved-one's sugar levels on the LibreLinkUp app.


How to activate alarm notifications on a smartphone

Setting the alarms on the FreeStyle LibreLink app is just the first step. Next, you need to make sure your smartphone has notifications enabled for the app. If you didn't enable all notifications and permissions during app set up, how you do it now depends on your phone's operating system.


Enable notifications on iPhone

  •  Open Settings on your iPhone.

  •  Go to notifications and select the FreeStyle LibreLink app

  •  Enable Allow notifications

  • Tap to highlight the lock screen, notification sounds, and banner options to enable all notifications.

Animated FreeStyle Libre App captured on a smartphone with the FreeStyle Libre sensor next to it.


Enable notifications and location permissions on Android

  •  Open Settings on your Android smartphone.

  •  Go to Apps, select the FreeStyle LibreLink app and select notifications

  •  Tap Notifications and enable All LibreLink notifications

  •  Tap Location and enable Allow only while using the app.

  •  If you selected Deny for Stop optimising battery usage during app setup, toggle Battery to allow.

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Here's how to make sure you don't miss your alarms

There are some things you can do to make sure you don't miss any glucose alerts:


Keep the smartphone's Bluetooth on.

Make sure your phone is within 6 meters of you at all times, unobstructed.

Do not force close the FreeStyle LibreLink app - let it run in the background.

Turn Do Not Disturb off or choose to override Do Not Disturb in your alarm settings.*

References & Disclaimers

Images are for illustrative purposes only. Not real patient or data.

1. Please see the FreeStyle Libre LibreLink User Manual for complete instructions.

2. 3.9 mmol/L is the default Low Glucose Alarm level and can be set between 3.3-5.6 mmol/L.

3. 13.3 mmol/L is the default High Glucose Alarm level and can be set between 6.7-22.2 mmol/L.

◊ The FreeStyle LibreLink app is only compatible with certain mobile devices and operating systems. Please check the website for more information about device compatibility before using the app. Use of FreeStyle LibreLink requires registration with LibreView.

^ Patients choose which device they want to receive alarms: FreeStyle Libre 2 reader or FreeStyle LibreLink app. They must start their FreeStyle Libre 2 sensor with that selected device. Once the patient scans their FreeStyle Libre 2 sensor with that device, they can receive alarms only on that device.

︽ Glucose readings are automatically displayed in the FreeStyle LibreLink app only when your smartphone and sensor are connected and in range (20ft). Notifications will only be received on the FreeStyle Libre 3 app when alarms are turned on and the sensor is within 33 feet unobstructed of the reading device.

§ The LibreLinkUp app is only compatible with certain mobile devices and operating systems. Please check for more information about device compatibility before using the app. Use of LibreLinkUp requires registration with LibreView. The LibreLinkUp mobile app is not intended to be a primary glucose monitor: home users must consult their primary device(s) and consult a healthcare professional before making any medical interpretation and therapy adjustments from the information provided by the app.

* Do not disturb mode will prevent you from receiving alarms unless you allow critical alerts. You must accept the app’s permission to request for critical alerts during app setup. To override  Do not disturb (DND) in your alarm settings, you first need to turn on a glucose alarm to access the DND setting.

* FreeStyle Libre systems refers to the FreeStyle Libre 2 and FreeStyle Libre 3 systems.