WT 1 - Supply Unit The WT 1 supply unit from Weller is a high-performance soldering station that features a digital quick-change system and backward compatibility for soldering irons from the WSD and WD series. This single-channel supply unit offers high functionality and flexibility, as well as intuitive operation through a multilingual menu in 7 languages and a graphic LC display with adjustable backlight. The compact design allows for space-saving stackability, and the housing cover also serves as a storage surface. Other features include automatic shutdown through an integrated usage sensor in the tool, ESD safety, and various programmable functions such as OFF time, process window, and locking function. The antistatic plastic housing ensures safety in sensitive work environments.