Item Type: Variable Frequency Inverter_x000D_Material: ABS_x000D_Storage Temperature: -25~+55_x000D_Input Voltage: Three phase 380-440V AC_x000D_Output Voltage: Three phase 0-440V AC 1Full Featured: Intelligent and efficient, extremely strong protection performance, full featured, can effectively make the operator's work efficiency. 2Surface Mounted Devices Design: All internal components are designed with surface mounted devices design, which greatly increases the stability of the machine and allows the safety of the machine and the operator to be guaranteed. 3Flame Retardant: This inverter is made of industrial flame retardant ABS plastic, which is highly impact resistant, highly heat resistant, flame retardant and has good overall performance. 4Humanized Design: Humanized keyboard design, digital display, easy to operate, simple and clear, brings a lot of convenience for the normal use of the user. 5Oversized Heat Sink: oversized heat sink with small fan, about 3 times larger than similar products, small fan to ensure low noise while assisting good heat dissipation. 1 x Inverter 1 x Instruction Manual