1FREQUENCY INVERTER: This VFD allows for driving with large torsion, high accuracy, quick response as well as wide adjustable speed range. 2UNIQUE PWM CONTROL: Optimized PWM control and electromagnetic compatibility ensure low noise and low electromagnetic interference. 3STABLE WORKING: Has good anti trip performance and the ability to adapt to coarse power, temperature, humidity and dust interference. 4PRACTICAL USING: Can be widely applied on motor, mixer, ball mill, water pump, cranes, conveyor, air compressor, fan, CNC machine tool, etc. 5CONVENIENT WIRING: After removing the screw, connect it directly to the wire, the simple wiring also makes the installation more convenient. Item Type: Variable Frequency Drive Parameter Power (KW) Input Voltage (V) Output Voltage (V) Frequency Range(Hz) AT1-1500S 1.5 1 Phase 220 3 Phases 0-220 0-400 AT1-2200S 2.2 1 Phase 220 3 Phases 0-220 0-400 Shell Material: ABS PlasticPower Phase Number: 1 phase. Filter: Built in filter. DC Power Supply Nature: Voltage type. Control Method: V/F closed loop. Output Voltage Adjustment Method: PWM control. Product Sizes(including knob): (width x height x thickness) Approx. 130 x 195 x 109mm / 5.1 x 7.7 x 4.3in (manual measurement has an error within 3%). Applicable Equipment: For motor, mixer, ball mill, water pump, cranes, conveyor, air compressor, fan, CNC machine tool, etc.