For how long does the alarm sound, if it is not interrupted?

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For how long does the alarm sound, if it is not interrupted?

Horizon's alarm sounds for 3 minutes, then it shuts off, or rather it goes into snooze, for 9 minutes. Then it sounds the alarm again for 3 minutes, followed by snooze for another 9 minutes. After this final snooze period, it starts playing, and keeps on playing until it is manually shut off. The light shuts off with the audio.

Applies to: