This compact designed soldering pen is ideal for professional use. Soldering can be performed and adjusted from the control knob from 200~450℃. Interchangeable iron plated tips are available to make the soldering station excellent for electronic and electric use. Features: Professional soldering tool is great for lead-free soldering semiconductors. High quality long lasting ceramic type heater. Adjustable temperature controlled soldering irons: 200~450℃ (there is a knob wheel on the electronic soldering pen for temperature adjust). Ideal for hobbies, kits, radios, and electronics work. Iron plated tip and stainless steel construction offer longer life.