VAPE DETECTOR IN USE SIGN no smoking or electronic Cigarette (REFLECTIVE, blue, ALUMINIUM MATERIAL,10X10 INCH,RUST FREE) REF24818 HPD SIGNS.COM Schools Are Turning to 'Vape Detectors' to Snuff Out Secret Smokers Business Insider Ya'll have experience with these smoke vape detectors that listens for "keywords" and "aggression"? : r electricians School districts installing new 'vape detectors' to combat youth e cigarette use