... by indicating light;V1,V3,V5 leads mensuring for Physical examination, time-saving, paper-saving, convenient ... 2.5,5,10,20mm/mV Recording mode Thermal Array printing Paper specification 63mmx30m,roll 50mmx20m,rollLCD display .320x240 graphic LCD,display ... status&waveform. 20x2 character LCD,display status.Safety classification IEC60601 ...