A9 Very silent printing thru direct thermal printing methodHigh speed (50mm/sec, based on character ratio 25%)High speed and low power consumption optionSupport 3.3V low voltage systemSupport 3.5V-9V power (best performance when 7.2-8.5V)Serial(RS-232C , TTL) interface/Parallel interfaceAbundant figure/curves/characters print functionEasier paper loading ItemSpecificationPrinting methodDirect thermal line printingPaper out detectionPaper end sensors functionpaper loading wayEasy paper loadingPaper width57 mmPrint width48 mmresolution ration8 dots/mm(384 dots/line)life of printing head6×106 character linesPrinting speed50mm/sec (when the character ratio is 25%)Character6x8dots , 8x16dots,or12x24dotsChinese character libraryGB2312,16x16dots,or24x24dotsoutline dimension(WxHxD mm)84mmx98mmx57mmInstallation dimension(WxH mm)78mmx92mmInlaid deepness54mmPaper suppliedThermal roll paper (57mm wide, 50mmø)InterfaceSerial(RS-232C ,TTL)/Parallel interfaceInput PowerDC 3.5V-9V, 15W/ DC 5V,3AOperating temperature5°C 50°CStorage temperature-20°C 60°COperating humidity10°C 80°CStorage humidity10°C 90°C