The Weathermatic E-SL4800 Euro 12 Zone Controller is expandable to 48 zones using expansion modules. It also has been wired to work with European style plugins and has an easy to read backlit LCD display. Weathermatic products are designed with efficiency in mind. The typical Â½-acre commercial property uses about one million gallons of landscape water per year. On average, properties exceed the landscape watering need by about 38% - or 380,000 gallons. Many properties overwater by as much as 60% - pouring hundreds of thousands of gallons of clean water into our streets and sewers. Weathermatic's primary goal is to reduce over watering wherever possible.