To start vaping you will need to turn on your device by clicking the bottom 5-times in rapid succession. When the device is on the button will blink and when pressed it will light up and you may hear popping and sizzling from your tank. If your button does not light up, your device is still OFF. To turn off your device click the button 5-times again. The On/Off feature ensures that the device does not operate accidentally when being carried in your pocket, bag, or purse.