Speed Controller for 1HP DC Motor Speed Controller for 1HP Reversible DC Motor admin February 11, 2026 Speed Controller for 1HP DC Motor Speed Controller for 1HP Reversible DC Motor. Power: 200W, 370W, 500W, 750W. Output Voltage: DC 180V-220V. Input Voltage: AC 220V. Speed Range: Adjustable from 1 to 1800 RPM.