If you're search for energy reduction strategies, you've probably already discovered the magic of Variable Frequency Driven motors for fans and pumps. The cost of motors, controls and implementation could range from $5,000 to $15,000. Our $399 device requires 4 screws and connects with 4 wires to single phase <5HP motors. It is self-managing and delivers most of the same energy-saving benefits of it's costlier alternatives.