Features: Efficient and energy-saving, supporting three-phase power input, suitable for speed control of various industrial equipment. Single in three out, stepless speed regulation, single button start, forward and reverse switching. Comes with over load protections and overheating protections. Low frequency high torque, input single-phase 220V, output three-phase 220V. Energy saving, programmable motor speed controller, 4-digit digital tube display. Specifications: Material: ABS Color: Black Size: approx. 17.4x12.8x7.4cm/6.85x5.04x2.91inch Package Includes: 1 Piece 3-Phase Frequency Converter note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.