Wherever smaller volumes of warm water are frequently required, the mini electronic instantaneous water heater DEM is the perfect choice. This appliance delivers water at the electronically controlled set temperature without having to overcome long supply lines with resulting line losses. There are also none of the common water and energy losses resulting from manual temperature adjustment. Consequently, the DEM electronic is ideally suited to washbasins, where a constant outlet temperature is preferred. The appliance can be mounted undersink or oversink; connection to the 230 V mains is also easily accomplished.