... interpretiveBuild in rechargeable Li batteryChinese/English languageSimultaneous 12 leads320X240 graphic LCD,5.7 inch screenPaper size:80mmX20/30mBuilt in RS232 interface (USB ... ,10,20mm/mVRecording modeThermal Array printingPaper specification80mmx30m,rollLCD display320x240 graphic LCD,display status&waveform.Safety classificationIEC60601-1 class I, type CFPower ...