WT2040 110V/220V ARC Welder ARC WT2040 welding machine adopts the latest pulse width modulation (PWM) technology and insulated gate bipolar transistor (IGBT) power module, which can change work frequency to medium frequency so as to replace the traditional hulking work frequency transformer with the cabinet medium frequency transformer. Advanced control module IGBT dual 110V and 220V, excellent Arc stability, 20-165amps very suitable weld thin workpiece. The lightness and strength of its components make this a reliable work tool for professionals or personal use. Over-voltage protection, undervoltage protection, over current protection, over load protection. Light weight, strong powerful welding. Smooth and fashion handle for lifting. Easy carry with belt. Specifications:Model: WT2040 Weight: 3.2 KGCooling: Fan CooledWelder Type: Inverter Power SourceDual Voltage: 110 V/220 V +/- 15%Nominal Supply Frequency: 50/60 HzWelding Current Range: 10 – 165 AOpen circuit voltage:62 V DCProtection Class: IP23Packing List:1 165A Welding Machine1 200 Amp electrode holder with 1.5M cable1 300 Amp earth clamp with 1.5M cable1 Welder Power ConverterOperating Manual.