If they can put a thermostat in cars and crock-pots, why not a shower? Automatically adjust hot/cold ratio to maintain a constant water temperature. Could even be powered by water flow through a small turbine, like those intelligent toilets.-- rmutt, Apr 06 2000 Grohe: Grohtemp Thermostatic Temperature Control Valve http://www.GROHEAmerica.com/grohtemp.htmI actually used an earlier version of this product in Japan in the early 80s. It worked wonderfully [jplummer, Apr 06 2000] 'Anti-scald valves'. Standard code at least in Florida...work by balancing the pressure of the hot and cold water; if the cold pressure suddenly lowers, the hot pressure goes down to compensate.-- StarChaser, Apr 06 2000 A while back when I was younger, there was a Heathkit kit for a nice digital shower thermostat. Had a little digital display and two big waterproof buttons. Was pretty neat looking but very expensive.-- amadeus, Jul 29 2000 I've seen ones with digital displays and buttons, to set specific temperatures, but they were expensive too...-- StarChaser, Jul 30 2000 random, halfbakery