Simultaneous acquisition of 12-lead ECG data, 12 leads waveform display and print by segment 60sec arrhythmia waveform analysis and 5 minutes arrhythmia waveform analysis Auto analysis and auto measurement, waveform can be reviewed Three channel printing (80mm recorder paper), chest waveform is uncompressed and easy to readable Alarm of electrodes breaking off, body diagram indicate unconnected lead area It is very useful for the large-scale examination