Automatic Float Switch: Equipped with an automatic float switch. When the water level higher than the pump, the pump will start working automatically under the control of float switch. When the pump fails to pump water, it will automatically disconnected the power.If the water level is higher than the pump again,it will work again Powerful Sump Pump: 3040 GPH, 1/3 HP, Max Lift: 29 ft; Acquaer submersible clean/dirty water pump moves up to 3040 gallons per hour rating tackles any draining job at a fraction of the time. Perfect for water supply, drainage in deep well, field irrigation garden irrigation and greenhouses Ingenious Design: The higher base plate and top suction design helps eliminate air locks and filters debris. For safety, the pump motor has an automatic thermal protector that will turn off the pump if it becomes too hot automatically. Once the thermal protector detects that the pump has cooled to a safe temperature, it will allow the pump to operate normally High-Quality Materials: The submersible water pump is made of high-strength, corrosion-resistant reinforced thermoplastic materials. It will provide trouble-free service for a long time when properly installed Customer Support: Acquaer sump pump comes with 3-year warranty, please do not hesitate to contact our Service Team on amazon, we are here to help for any concerns within 24 hours Acquaer 1/3HP Submersible Sump Pump with Float Switch