... AC,50/60HzOutput: 8.5VDC, 2.5AWorking electric currentpower on current:50mA~150mA,printing average current:1AConnectivity1 power port, ... and dustproof, 10 alphanumeric keys,9 function keys,1 on/off switch, supports to input figure and letter,the ... ) (55.6Kbps optional)Communication modeMODEM,CDMA or GPRS(one of them), NETProgram LanguageStandard C, support Second DevelopmentLanguageSupport English and ...