Off Stamp X Cube Crystal 35K Disposable Kit 17mL & 35,000 Puffs Giant Vapes How Do Vapes Work? What's In a Vape and How It All Works There is a tiny component inside disposable vapes that people mistakenly assume is a microphone. It is not. It is a special sensor that causes the heating element to produce vapor when triggered. ### Disposable vape, just three components but what it bugs me how does it know when it's empty. Led flashes when no juice is left but how? What makes led flash?