Inverter power source for professional welding applications, with MMA (Stick) welding process and TIG Lift Arc welding process.Flexibility of use with a wide range of electrodes: basic, rutile, cellulosic, cast iron end stainless steel. The machines are single board digital control with 32 bit high speed microprocessors fitted to enable precise control of the cycle and of the welding arc.More compact, lighter and easy to carry, The Riland MMA GDM is the perfect welding machine for your MMA applications . Produced in three different models:Riland MMA 140 GDM Riland MMA 160 GDMRiland MMA 200 GDMFor your own safety, the GDM range welding machine, is equipped with VRD system. The Voltage Reduction Device (whose acronym is: VRD) is a device used to decrease output voltage to a safe level when the welding source it is outside the welding cycle. Through this particular arrangement, when the arc is switched off, the open circuit voltage is reduced to only 25 V.