Looks like per their website it did function as intended... It surfaces potential threats for the school to look at and make a human decision. The principal decided to send the police after the school safety team dismissed it as part of the correct process. I mean fire alarms go off for lots of things that are not fire alarms... This was an alert meant to be validated by a human that messed up.

Its pretty clearly documented how it works here:

https://www.omnilert.com/solutions/gun-detection-system https://www.omnilert.com/solutions/ai-gun-detection https://www.omnilert.com/solutions/professional-monitoring