High resolution thermal array printer; 2/3/3+2 channel printout format High resolution thermal array printer; 2/3/3+2 channel printout format 3.5 inch 320x240 LCD to display setting menu and 12 channel ECG waveform Simultaneous acquisition of 12 lead ECG data Automatic measurement and interpretation of ECG waveform RS232 interface and optional software supporting data transmission to PC Isolated input circuit with protection against defibrillation and pacemaking AC power built in rechargeable LI ion battery supporting 2 hour operation Paper size: 63mmx20m (roll type) Standard Accessory Patient Cable: 1pc Limb Electrode: 4pcs/set Chest Electrodes 6pcs/set Power Cable: 1pc Grounding Cable: 1pc Paper Shaft: 1pc Recording Paper: 1roll Fuse: 3pcs Built in Battery: 1pc Operation Manual: 1copy