Features 1、Reliable Work: All the internal components have adopted SMD design, which greatly increases the stability of the variable frequency drive. 2、Simple in Use: Clear operation panel together with digital display allows for great viewing and convenient control. 3、Quick Cooling: The extra large heatsink is also equipped with a low noise cooling fan, ensuring quick heat dissipation. 4、Good Material: Made from flame retardant ABS material, this variable frequency drive is very against impact. 5、Safer Working: Premium mainboard enables good protection and high safety for 3 phase 340‑440V input and 0‑440V output. Specification Item Type: Variable Frequency Drive Material: ABS Storage Temperature: -25℃~+55℃ Input Voltage: 3 phase 340-440V AC. Output Voltage: 3 phase 0-440V AC. Package List 1 x Variable Frequency Drive 1 x User Manual