Press the mode button to adjust the output wattage, the bottom wattage display will light the corresponding output power value:

8W, 10W, 12W, 14W, 16W, bypass.

Note: The output wattage can only be adjusted when the resistance of the connected coil is detected to be equal to, or higher than 1.0Ω; when the coil resistance is less than 1.0Ω, the output mode is automatically in bypass mode therefore cannot be adjusted.