Motor Type: AC Motor Model Number: Voltage Regulator Max Power: 6KW (max resistive load, 3KW power for normal use recommended) Efficiency: 90% Work Voltage: AC 220V design with protective case, suitable and factory use. Using original 41A . Using 1.6 mm FR-4 PCB, and safe welding design. Upgraded double capacitance circuit design (safe capacitance and metal film capacitance) protects the by reducing surge and voltage . Brings more safety and efficiency. Adjust Voltage: AC 0-220V to connect load you adjust the voltage. in mainly used on resistive load and most single-phase motors. check your model series you buy. colour: Silver Material: Metal + electronic components size: 13*6.4.7cm Knob Diameter: . 6 mm/0.24 inch Package Contents: 1 * Electronic controller Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.