The integrated micro-processor of VED E classic appliances detects and controls the required temperature output based on the chosen temperature setting . The control is done based on the water inlet temperature setting. The control is done based on the water quantity detected by an impeller sensor. The VED E classic is not equipped with an electronic water quantity regulator warranting a warm water temperature right to the degree especially with very low cold water inlet temperatures. The temperature can be set easily between 30 and 60°C by means of a practical + and - knob.