The Weller WT1010H is a 150W, 120V, 150 to 850°F WT 1 Channel Stackable Power Unit with WP120 Iron and Stand, suitable for all soldering jobs. The WT1010H includes a safety rest has a metal, wool, brass and sponge so you can choose between wet and dry cleaning. Additionally, the WT1010H features power response heating technology for quick operation, a sensor inside of the handle that detects when the soldering iron is in use for automatic standby, soldering tips can easily be replaced independent of the heating element, and a slim iron design that allows for easy handling and quick exchange of heating elements.