Designed to remove water from basements, garages, stairwells, utility rooms, backyards, sumps, pools, pool covers, boats, and other utility applications. The computerized fully automatic versions turn on every 2-1/2 minutes to check for water. If water is present the pump stays on until all the water is removed. It cannot run dry. Designed with a tough acetal plastic housing and strainer base, glass filled nylon impeller, stainless steel shaft, heavy-duty double insulated motor, and Rules exclusive Teflon® shaft seal. Snap off strainer for easy cleaning. Anti- airlock design. 3 year manufacturer"s warranty.