The Weller WT1011H is a 150W, 120V, 150 to 850°F WT 1 Channel Stackable Power Unit with WP200 Iron and Stand suitable for all soldering jobs. The WT1011H features a sensor inside of handle that detects when soldering iron is in use for automatic standby, a slim iron design that allows easy handling and quick exchange of heating elements, soldering tips that can easily be replaced independent of heating element, and power response heating technology for quick operation. The unit includes a safety rest that has a metal, wool, brass and sponge so you can choose between wet and dry cleaning.