Edwards SIGA DTS Duct Test Station Smoke Detectors Amazon.com This may look like a regular smoke detector, but it's actually a vape sensor. Columbus County Schools now has these sensors in high school bathrooms, an effort to keep kids from vaping. Edwards Siga Oscd Smoke and Carbon Monoxide Detector Edwards SIGA PD Edwards EST (SIGA PD) Intelligent Photoelectric Smoke Detector Life Safety Consultants Edwards SIGA PD Smoke Detector (Replaced by SIGA OSD) Vape Detector Smart Vapor Sensors