Electronic Scale Inhibitor suits commercial/domestic use.
Press Release Summary:

Original Press Release:
Introducing the New Low Cost Electronic Scale Inhibitor
to add to the WaterKing Range.
This unit will remove existing Limescale from equipment and appliances and prevent the formation of new limescale. Less limescale means longer life and considerable energy savings for boilers, hot water heaters, vending machines, coffee makers and other commercial and domestic appliances. The unit works the most effectively on the cold water pipe closest to the place where scale forms.