The only smoking and noise detector for rental properties prevent parties, cigarette, marijuana and vape smoke. Wynd Technologies, Inc. HALO Vape Sensors in Greenville County Schools Vape Detector (& Weed, Smoke) False positives in vape detectors are a common concern, particularly when the devices are placed in environments with factors that can mimic vaping aerosols., , Common causes include:, Aerosols