Vape detection devices can send out both silent and audible alerts

https://www.wfla.com/business/press-releases/globenewswire/9676076/zeptive-software-update-boosts-vape-detection-performance-and-adds-new-features-free-update-for-all-customers-with-zeptives-custom-communications-module

Vape detection devices can send both silent and audible signals, permitting schools to pick discrete alerts or on-site deterrence techniques.