When is the alarm activated? Klara Hansen October 03, 2018 08:39 Updated Follow The alarm in Norrsken House activates at 12 midnight every weekday and it is on during weekends. Related articles How do I work the alarm? How do I delay the alarm activation if I stay after-hours? What do I do in case of emergency? SATS membership Access to Norrsken House Comments 0 comments Please sign in to leave a comment.