Auto or Manual, As You Want Controlled by a removable, integrated float switch. The automatic mode is perfect for unattended operation,starting automatically when the water level exceeds 4.3 inches and shutting off when the water level reaches 2.76 inches. In manual mode, the pump will start running when plugged in and will not shut off automatically, remember to turn off the power in time to prevent the motor from burning out. Powerful Pump, Twice as Fast The jeflike water pump has a Max. Discharge of 3500 GPH (58.3 gallons per minute), and pump twice as efficiently as other pumps because of their high-performance motors, a Max. Head of 27 ft, deeper pumping, and a maximum temperature of 95