Using Glucose Alarms
When in range, your Sensor automatically communicates with your device to give you Alarms. These alarms are on by default. See Setting Alarms section for information on setting alarms.
![](assets/images/icons/popup_icon_alert.png)
Caution
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- For you to receive alarms, they must be on and your Reader should be within 33 feet of you at all times. The transmission range is 33 feet unobstructed. If you are out of range, you may not receive glucose alarms.
- To prevent missed alarms, make sure the Reader has sufficient charge and that sound and/or vibration are turned on.
![](assets/images/icons/popup_icon_info.png)
Low, High Glucose, and Signal Loss Alarms:
Touch Dismiss Alarm or press the Home Button to dismiss the alarm.
Touch Dismiss Alarm or press the Home Button to dismiss the alarm.
Important
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- The Low and High Glucose Alarms should not be used exclusively to detect low or high glucose conditions. The glucose alarms should always be used along with your current glucose, glucose trend arrow, and glucose graph.
- Low and High Glucose Alarm levels are different from your Target Glucose Range values. Low and High Glucose Alarms tell you when your glucose has passed the level you set in the alarm. Your Target Glucose Range is displayed on glucose graphs on the Reader and used to calculate your Time In Target.
- Alarms must be kept on for you to receive them and you should ensure that your Reader is within 33 feet of you at all times. The Sensor itself will not issue alarms.
- If the Sensor is not communicating with the Reader, you will not receive glucose alarms, and you may miss detecting low glucose or high glucose episodes. You will see the
symbol on the Home screen when the Sensor is not communicating with the Reader. Make sure the Signal Loss Alarm is on so you will be notified if your Sensor has not communicated with the Reader for 20 minutes.
- Make sure the Reader's sound and/or vibration settings are on and your Reader is near you. The Home screen indicates the sound/vibration setting for alarms.
- You will only receive one alarm per glucose episode. If you ignore an alarm, you will receive it again in 5 minutes if the condition still exists.
![](assets/images/product_use/using_alarms/reader_screen_low_glucose_alarm.png)
![](assets/images/product_use/using_alarms/reader_screen_high_glucose_alarm.png)
![](assets/images/product_use/using_alarms/reader_screen_signal_loss_alarm.png)