... sheets, or other OMR marks sheets 2, small and portable, only 0.8kg weight 3, hand feed * Specifications:Feeding mode: hand ... Linux, MacSDK for developmentDLL and demo codeOperating condition:Indoor use only, temperature: 0°C~50°C,Humidity: 35%~95%, no erosive gas ... paperor thermal sensitive paperColumn space :5.35mm=0.21inLine space:3~12mm=0.12~0.47inData capacity:≤13 data columns≤75 linesMarking ...