1. Alarm function works with sleep mode monitoring only, not daytime or exercise mode;
  2. Each sound alarm will happen depending on live SpO2 data less than threshold for 5 seconds continuously, if only 2 or 3 second lower,  no alarm;
  3. Each sound alarm will last only 3 minutes at most and stop automatically;
  4. Interval time between two sound alarm will be more than 6 minutes, if second alarm happened but within 6 minutes, then no sound alarm;
  5. When the alarm goes off look on the screen of your phone and it will give you a choice to either shut the alarm off or turn it off for 5 minutes