Precaution
Do: Set smart device and receiver settings separately.
Why: Settings are specific to each display device and don't carry over to other devices.
If you set up one device and then use another, you won't get an Alarm or Alert.
Consequences: Missing a severe low or high blood glucose or making a treatment
decision that results in injury.
Precaution
Do: Verify smart device and receiver are turned on.
Why: Neither the receiver nor smart device will generate sensor glucose readings,
Alarm, or Alerts if turned off.
Consequences: Missing a severe low or high blood glucose event or making a
treatment decision that results in injury.
11.3 Alarm and Alerts
As part of managing your diabetes, you learned how to read your trend screen and how
to enter Events. In this chapter, you'll learn how Alarm and Alerts can keep you safe from
severe lows or highs.
Depending on your display device, you can customize how you receive your Alarm or Alerts.
What Is an Alarm?
While there are a variety of Alerts, there is just one Alarm, the Urgent Low Alarm (Alarm),
which is set at 55 mg/dL. The Alarm will repeat every 5 minutes until you confirm the Alarm
(see Chapter 12 on how to customize the sounds). If you confirm the Alarm and your sensor
glucose readings do not go above 55 mg/dL in the next 30 minutes, the Alarm repeats.
Unlike Alerts, the Urgent Low Glucose Alarm setting can't be changed or turned off. Think of it
as a safety net: your glucose level is dangerously low—pay attention now!
What Are Alerts?
An Alert is a message telling you your glucose level or CGM system needs attention.
Dexcom G5 Mobile System User Guide
Sensor Glucose Alarm and Alerts
208
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