The ArcMaster 185 AC/DC is a multivoltage, full-digital control, AC/DC, Stick/Lift TIG/HF TIG inverter power supply. You get exceptional performance from the embedded microprocessor with digital controls, delivering perfectly smooth, stable arc characteristics for E6010 Cellulose and low hydrogen electrodes. Standards Compliant Integrated VRD: Voltage Reduction Device reduces the OCV when the power supply is not in use. This all but eliminates the risk of electric shock to the operator from the secondary welding circuit.