Automatic shutoff upon low water level detection circuitry has been removed. Pump must be turned off manually. GCFI plug comes with Reset button and Test button. To turn pump on, push the Reset button. Use the Test button to turn pump off.

GFCI is a safety protocol used to interrupt electricity flow if it detects that current is flowing through an alternate path, such as the ground wire, or your body. Disc shaped for maximum stability, if using for pool cover, for example, but can be used to transport water in any application.