Soldering RT2001 pulse transformer 100 watts is used for mounting or dismounting elements and units of electrical and electronic products. The heating element is used as the sting out of steel wire. The current through the sting is passed only during the soldering time, so the soldering gun consumes very little electricity. Sting secured with a screw. This soldering iron to illuminate the LED equipped soldering, and the case is made of a heat-resistant high impact plastic.