Zoeller N140 effluent pump, 1 HP with durable cast iron construction for long service life. Designed for septic systems, mound systems, or effluent transfer applications. Handles up to 2" solids, thermally protected motor, and heavy-duty performance you can count on. Built in the USA and ready for reliable wastewater management. NON-AUTOMATIC - Requires Float Switch or Control Panel. Because of that, it is untested.