plete digital design, wave digital filter, automatic adjustment of baseline, amplification, and automatic lead switch. 2.Patient's information, battery, time, heart rate,electrocardiograph waveforms from 12 leads, work module, paper feed speed, amplification, wave filter, paper empty, lead drop-off, and with English operation menu. 3.A thermal-array recording mode with high resolution is adopted, and electrocardiograph waveforms from 12 leads, automatic lead printing system, paper feed speeds, amplifications, calibrations, wave filters, IDs, dates, time, and patients' information can be printed. 4.320 x 240 graphic LCD display. 5.16 copies of uncompressed electrocardiograph data can be stored, and analysis results can be played back and copied. Connection with computer to achieve computerized process of electrocardiograph data. 6.Synchronous acquisition of electrocardiograph signals from 12 leads. 6, 6+1 (rhythmic lead), and 12 channel record mode. 6.Two types of power supply are available, including AC and DC power supplies, and with inner rechargeable battery and automatic protection circuit. 50 electrocardiograms can be taken. The equipment will automatically shut down, if there is no operation for 5 minutes. 6.Recording on A4 size paper