This compact desgined station is ideal for professional use. Soldering can be performed and adjusted from the control knob from 200°C - 450°C. 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 ° C (there is a knob wheel on the Electronic Soldering Gun for temperature adjust) ESD Safe, Fast heating up time, Adjustable temperature control (rotary dial) Iron plated tip and stainless steel construction offer longer steel construction offer longer life. Operating: Clean the parts to be joined Clean soldering iron tip and "tin" all faces of tip with a coating of solder Heat parts (not solder )to be joined Apply flux-core solder to heated parts, not tit till solder me soldering tip ,and heat it till solder melts and flows freely. Caution: When the soldering iron is plugged in for the first time, there comes out a smoke from the tip end. The smoke stops in a smoke while and a smoke never comes out again. Use soldering stand and other aids to avoid burning fingers. Applications: Suitable for electronics, jewelry making, craft projects, and PCB soldering Ideal for hobbies, kits, radios, and electronics work.