Set Alarms on Echo Dot with clock
Say "Set an alarm for 10:30 am tomorrow."
 
   The device displays a dot on the lower right when an alarm is set to go off within the next 24 hours.
To set an alarm in the Alexa app:
- Open the Alexa app 
. - Open More 
 and select Alarms & Timers. - Select Add Alarm 
. - Enter the alarm's time, the device you want to sound the alarm, and whether you want it to repeat.
 - Select Save.
 
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