Vape detection devices can send out both quiet and audible alerts

https://markets.businessinsider.com/news/stocks/zeptive-releases-update-1-33-500-for-vape-detectors-adds-enhanced-detection-performance-loitering-monitoring-and-integrations-with-bosch-milestone-i-pro-and-digital-watchdog-1036055200

Vape detection gadgets can send out both quiet and audible alerts, allowing schools to select discrete notices or on-site deterrence techniques.