The ZOELLER PUMP WM818 is a versatile 115V, single-phase pump designed for automatic operation. Operating at 60Hz, this model is CSA certified, ensuring it meets essential safety standards. Its compact design allows for easy installation in residential settings, making it ideal for sump and drainage applications. The WM818's automatic features enhance convenience, allowing for seamless operation in various water management tasks. With durable construction and reliable performance, this pump is a preferred choice for homeowners and professionals alike.