Motor Type: AC Motor Number: Voltage Regulator Max : 6KW (max resistive load, 3KW for normal recommended) Efficiency: Greater than 90% Work Voltage: AC 220V design with protective case, suitable and factory . Using original imported 41A . Using 1.6 mm FR-4 PCB, reliable 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 Please remember to load before you adjust the voltage. in mainly used on resistive load and single-phase motors. Please check your series before you buy. colour: Silver Material: Metal + electronic components size: 13*6.4.7cm Knob Diameter: approx. 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 the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.