The generator is available in 240V 1-phase (PH) configurations. Select the Steamist operating control option with features that best suit your bathing preferences. A Steamist control or control package is required for operation and is available in a variety of attractive finishes. We highly recommend the Steamist Auto Drain Valve to help prevent harmful mineral buildup on the heating elements and reservoir, ensuring the longevity of the generator. The drain valve automatically drains the steam shower system after the water cools. For added convenience, the Auto Drain may be used with the available Steamist Generator Drain Pan. All Steamist SM-Plus residential steam generators are UL and CUL listed for unmatched quality and safety. Steamist SM-Plus generators are available in a variety of power ratings to best suit your bathing needs.