Model,DN-20 Fiber laser marking machine Laser wavelength,1064nm Laser type,Fiber Laser power,20W Acousto-optic modulation frequency,20Hz-200kHz Max. scanning precision,8000mm/s Repeatable accuracy,0.001mm Min. letter,0.2mm Min line width,0.01mm Marking area,220 * 220mm Soft ware,English EZCAD ,easy to operate Cooling system,Air cooling Working Temperature,0-35 Working humidity,0-90%, with no condensation Power supply,220V/50HZ (Optional 110V/60HZ)