Features: The 520555 salt chlorine generator efficiently converts salt into pure chlorine using advanced electrolysis technology, for in ground pools up to 40,000 gallons. Featuring a ibtelligent LCD display that monitors real time salinity and chlorine levels, this chlorinator includes overload protective and automated diagnostics for optimally pool water automation. Ideal for residential pool owners and commercial facility managers seeking low maintenance water sanitation solution for in ground swimming pools. Designed for seamless integration with saltwater pool systems, it ensures consistent water clear in backyard or public swimming environments requiring automated chlorine generation. Its tool free installation simplifies setup, making it upgraded for sustainable pool maintenance in ground based aquatic environments. Specifications: Product Features: salt water compatible Color: Black and white Component:Plastic Size: Approx.10.25x3.18x16inch Model: 520555 Product name: Salt chlorine generator battery Package Includes: 1pcs Automatic Chlorine Generator note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.