Weller wtp 90 soldering iron 90w weller t0052922399 the weller wtp 90 set is a 90w temperature controlled soldering iron with wellers power response heating technology supplied complete with a wsr 200 safety restthe ability to quickly change the heating element during operation allows efficient working with several different tip types in quick successionthe iron operates from 24v ac supplied by a weller wt 1 or wt 1h power supply unit weller wtp 90 soldering set with safety rest wsr 200