Why is my vape pen lighting up but no smoke? Why vape detection is different from smoke alarms and how to install each Halo Smart Sensor posted on the topic LinkedIn No Smoke Vape Pen "No Smoking" Mini Pencil No smoking e cigarettes Stock Vector Images Alamy More than a month after the vape detectors, called Zeptive Alarms, were installed in the bathrooms, the devices have continued to detect and log multiple vaping incidents throughout the school day. Read