Specifications: Model:OMR50FS Reading mode:single-face and read one time Feeding mode:automatic Speed:8000pcs/hour (based on A4) Form size:130mmí-50mm-300mmí-210mm Form weight: 70-150g/m2 Track spacing:4.23mm Marking tools:No.2 or softer pencils,carbon pens Mark shapes:Rectangles,ovals and circles Error rate:í_1í-10-7 Mark choice:single choice, multiple choice and BCD code Format:26 kinds, each has 255 commands at most Interface:RS232, USB Host:PC, Laptop Weight:8kg. Operating system:Win2000,Win2003,Win XP Power supply:AC100-240V, 50-60Hz Dimensions:560mmí-170mmí-400mm Operating condition:temperature 0-40ípC, humidityí_90%, no erosive gas. 610mmX250mmX475mm.