Features: 1[3 Phase Input and Output] Our vector inverter is intelligent and efficient, with 3 phase 380?440V input, 3 phase 0?440V output, 2.2KW, and 5.1A output current. 2[RS485 Communication and Digital Display] The inverter has humanized keyboard design, digital display with RS485 communication, and built in braking unit, which can be externally connected with braking resistor for emergency stop brake. 3[Full Patch Design and Protection] All internal components are designed with patch, increasing the stability of the machine and strong protection performance. 4[Good Heat Dissipation] Our inverter has a large heat sink with a small fan, and the small fan ensures low noise while assisting good heat dissipation. 5[Made of ABS Plastic] This vector inverter is made of industrial ABS plastic, high impact resistance, high heat resistance, flame retardant and good overall performance. Package included: 1 x Frequency Converter 1 x Instruction Manual