The Nord 5’s built-in controls make it easy to turn the device on and off, lock or unlock it, and adjust the wattage. Here’s an overview of how to use them: Power on/off: press the fire button 5 times in quick succession Lock/unlock: press both adjustment buttons at the same time Adjust wattage: press one of the wattage buttons (up or down) Clear puff count: press fire and either of the adjustment buttons at the same time