What vape alarm has held up best in school bathrooms?

Have you found a system that's been consistent without generating a ton of nuisance alerts? I'm helping evaluate a few options for a K-12 project, and the bathrooms are the biggest concern, cameras aren't an option, the sensor has to be dependable on its own, especially in spaces where humidity changes throughout the day, I'd rather hear from people who've installed these than read another spec sheet , fast notifications are important too since there's usually only a short window to respond