When ”Mask” is selected and the ”Alarm threshold” is set to “High”, an alarm will only trigger with a high detection score, making “Mask” alarms less likely to be raised. Similarly, when “No Mask” is selected and the “Alarm threshold” is set to “High”, an alarm will only trigger with a high detection score, reducing false alarms for “No Mask”. This setting can help decrease false positives in each case.