Model Number: WH-E30 Parallel Brand Name: WH,Brightek Key Specifications/Special Features: WH-E30Please refer to the below table ItemsSpecification Printing method Direct thermal line printing Paper width 57mm Print width 48mm Resolution ratio 8 dots/mm (384 dots/line) Life of print head 6x10 character lines Printing speed 60mm/seconds (when the utilization rate is 25%) Character size 6x8, 8x16 or 12x24 dots Chinese character library GB2312,16X16 and 24x24 dots Paper supplied Thermal roll paper (57mm wide, 30mm) Interface Serial RS232/TTL/485/Parallel interface Input Power 5-8.5V AC, 15W/DC and 9-24V, 30W Operating temperature 5-50°C Storage temperature -20-60°C Operating humidity 10-80% Storage humidity 10-90%