I remember the year Kohler introduced the DTV electronic shower control system at the Kitchen & Bath Industry Show; editors in the press room thought it was the coolest thing ever. (This happens frequently when Kohler introduces a product.) At any rate, DTV is no longer the only game in town. Moen has ioDigital and now Hansgrohe has introduced RainBrain, another electronic computer system for the shower. Like an iPod, the touchscreen panel allows you to control the spray mode, water temperature, and even lighting and music functions. It will warm your shower without scalding, and will adjust to the present temperature when you turn it on. “Beyond the basics, the system’s warm-up function flushes out cold water and automatically adjusts to the preset temperature as soon as it is turned on – preparing the shower for instant enjoyment,” the company says. “Options for water cascade, hot/cold shower alternation and music selection via a Bluetooth compatible smartphone or media player are easily accessible via the menu function.” You can even preset it for up to four people. www.hansgrohe-usa.com.