By combining advanced electronics, permanent magnet motors, and Grundfos’ own micro-frequency converter, the Redi-Flo 3” pump can be controlled and communicated with in ways never before possible with submersible pumps. A few of the features that come out of this combination are Fluid Level Control, Soft-Start, and integrated Dry Run protection. In addition, the starting torque is 1.5 times greater than a conventional 3 wire motor.