"Dear Valued Dexcom Customer,
Dexcom monitors product complaints through our quality program where we have noticed an increase in complaints for audible alarms and alerts associated with Dexcom Receivers (Dexcom G4 PLATINUM, Dexcom G4 PLATINUM Pediatric, Dexcom G4 PLATINUM Professional, Dexcom G4 PLATINUM w/Share, Dexcom G4 PLATINUM w/Share Pediatric and Dexcom G5).
As such, we are notifying all Dexcom customers that you may not receive an intended audible alarm or alert if you are relying on hearing the alarm or alert. As a result, you may not detect a severe hypoglycemic (low glucose) or hyperglycemic (high glucose) event."…
Details here:
https://www.dexcom-notification.com/cgm