The 5600 Mechanical Meter Control features an economical water meter engineered to monitor your family’s daily water usage, regenerating your system only when needed. Fleck’s time-tested mechanical meter will provide years of trouble-free service. Additional Features of the Nelsen Brand Water Conditioning Systems High quality, cation water softener exchange resin. Tough, high density, polyethylene salt storage tank. Additional features available to match any decor. Electricity cost per month is approximately .29 cents.*