Working Voltage: AC220-240V OR AC100-130V. Clean the electronic components to be soldered. Once iron reaches temperature not too high, recommend 300-400? Apply a little solder to the heated iron tip to prevent oxidation, then rub the iron tip to evenly extend the solder to the surface of the iron tip. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Welding & Soldering Equipment\Soldering/Desoldering Equipment & Accessories\Soldering Guns & Irons".The seller is "sssunshineee" and is located in this country: CN. This item can be shipped worldwide.