Powerful Sewage Pump: Voltage:115V/60Hz; Horse Power:1/3 HP; Power Cord Length:10ft; max. Flow rate: 3680 gallons per hour Auto/Manual Operation: With integral snap-action float switch for automatic operation; Activates when water reaches float switch,auto off when water drops down. Automatic work, no need to manually start Built-in Overload Protection: Built-in automatic thermal overload protection will prevent the motor from overheating and burning. When the pump is dry running, it will shut off automatically to protect the motor Cast Iron Construction: Acquaer sewage pump built by cast iron, provides superior reliability and it has corrosion resistant coated avoid corrosion effectively Good Compatibility: Equipped with reinforced engineered non-clogging vortex impeller and 1-1/2'' NPT discharge, capable of passing 1/2" diameter solids. Ideal for use in residential sewage, basement (Warring: Do not use in septic tanks) Acquaer 1/3 HP Submersible Sewage/Effluent Pump,3680 GPH Cast Iron Sump Pump with Automatic Integrated Snap-action Float Switch for Basement,Flooding Area