Features This VFD uses a unique control method to realize high force moment, high accuracy and wide range of speed regulation, with high performance. By optimizing PWM control technology and electromagnetic compatibility, it meets users' requirements for low noise and electromagnetic interference. Quick response to start and stop, great force moment at low speed. It has good anti-trigger performance and ability to adapt to power, temperature, humidity and dust interference, greatly improved stability. Simple to use and wire, connect to the wires after removing the screws. Features: Model: AT1-4000X Rated voltage: AC220V (single phase) Suitable motor power: 4kW Control method: V/F open loop Output voltage adjustment method: PWM control Rated current: 20A Maximum output frequency range: 0 - 400 HzTerminalFunctionL,Ninput AC 220V single-phaseU,V,Woutput,connect to three-phase AC motorGNDground Features: Simple to use and wire, connect to the wires after removing the screws. By optimizing PWM control technology and electromagnetic compatibility, it meets the requirements of users for low noise and low electromagnetic interference. This VFD uses a unique control method to achieve high force moment, high accuracy and wide range of speed regulation, with high performance. It has good anti-treading performance. bugging and capacity to adapt to the interference of power, temperature, humidity and dust, greatly improved stability.Quick response to start and stop, great force moment at low speed. Package includes: 1 x Frequency Inverter Note: Please note that the new type and old type of this product will be sent randomly, and make sure you do not mind before ordering. Package List