Effective and Powerful performance: Pumps water 1.75X faster than other pumps. With its open impellers, the flow rate can be up to 4200 GPH with a maximum lift up capacity of 30FT. This 1/2 HP submersible water pump can quickly remove standing water on pool cover, preventing the flooding damage. The pump can handle various types of water including clear water, rainwater, spring water, river water, lake water and other types of water (with up to 1/4" Diameter Solids)..Effortless water removal driven by the US patented Auto-Flo Technology: The water pump is turned on as soon as Auto-Flo detects a water level of 2" (about 50.8 mm). Auto-Flo shuts down the pump when the water level falls below the normal level, protecting the motor from burns caused by dry running..The broad base stops the pump from overturning while the base strainer filters debris to prevent clogging: works well on a soft surface like a pool cover and an on-ground pool..Smart, Compact and Portable: The Robot-like design at only 8*7*10 inches. At any moment, you may effortlessly transport it from the basement to the garden or pool. The 25-feett power cord provides a large reach for outdoor use..6 adaptors available: 6 adaptors (2*2”,1-1⁄2”,1-1⁄4”,1”, 3⁄4”) make sure that you can connect the pump to your own discharge hose. Please note that a 2’’ hose is required to achieve a maximum pumping flow of 4200 GPH.