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Message: <blockquote data-quote="Steveee" data-source="post: 2503177" data-attributes="member: 12910">Alarms not working is a common complaint. Here’s my view on a few things.1. Libre uses Bluetooth Low Energy (BLE) which can be interfered with things such as WiFi so you may have had temporary signal loss2. The BLE part of the sensor can fail. If your alarms previously worked with the device that started the sensor, it’s probably an issue with the sensor 3.  Alarm keeps on going off - when you cancel alarm on phone or reader you must scan. It’s a safety thing, I.e. until you scan you don’t actually know what the reading is. Strangely, if you also get alarms mirrored on a smartwatch, when you cancel alarm on the smartwatch the alarm doesn’t repeat!4. Alarm only goes off when you cross the alarm threshold. If you scanned, it won’t repeat until you cross the threshold again</blockquote>

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