A modern vape detector can run on battery power

https://www.wgntv.com/business/press-releases/globenewswire/9695907/zeptive-releases-update-1-33500-for-vape-detectors-adds-enhanced-detection-performance-loitering-monitoring-and-integrations-with-bosch-milestone-i-pro-and-digital-watchdog

A contemporary vape detector can run on battery power, enabling flexible positioning in restrooms and locker rooms without expensive electrical wiring or remodellings.