electronic scale & rust prevention chemical & salt free whole house water softener substitute system to correct problems caused by inorganic groundwater impurities, helps avoid lime scale accumulation ronaqua the electronic scale & rust prevention system is an advanced, hi-tech water softening device that resolves hard water problems without the need to use chemicals, salt, or filter cartridges by preventing them from forming the lime-scale deposits in the pipes and not removing the minerals from the water. instead, two small coils of wire wrapped around your home’s water supply line create a magnetic wave that changes how minerals behave in fluid. the chemical composition of your water doesn’t change. unlike salt-based softeners that remove calcium and magnesium, the ronaqua electronic scale prevention system suspends them, so they don’t stick to pipes. this process naturally results in a small rise in solubility, which allows the now unsaturated water to dissolve existing lime scale deposits and remove them from the water system. any homeowner can install it in a matter of minutes. it’s designed for use with all types of metal and pvc pipes except those made of iron or lead — and it treats every drop of water that flows through your home. power usage is minimal — the standard 110-volt electrical supply is all you need. this unit does not require any maintenance, but it is necessary to check it regularly in order to make sure that light indicators are flashing.