Reading mode: double-face and read two times Feeding mode: automatic Speed: 1-3pcs/sec (based on A4) Form size: 130mm*50mm-300mm*210mm Form thickness: 70-150g/m 2 Track distance: 4.23mm (5.08mm, 7.00mm) Tolerance: cutting±0.2mm Marking tools: pencil read head: pencils and carbon pen pen read head: pencils, pens, ball-point; pens (non-red, non-white) Size of mark: 2mm*1mm Error rate: 1*10 -7 Double-sheet rate: 1*10 -4 Check rate: 1*10 -4 Mark choice: single choice, multiple choice and BCD code Format: 26 kinds, each has 256 commands at most Bar code: 128 code, 39 code and 25 code Communicate interface: RS232 serial and USB interface Host: PC 586 or faster, notebook PC Weight: 8kg Operating system: Win2000 or Win XP Power supply: AC100-240V, 50-60Hz Packing size: 560mm*170mm*400mm Environment: temperature 0-40°C, humidity 90%, no erosive g