Features: 7 inch graphic LCD display,touch screen and function key control at the same time, more convenient and shortcut. Threechannel ECG machine with interpretation Auto-regulation of baseline drift can effectively inhibit baseline drift, optimizing the printing position to achieve high-quality ECG. With automatically measuring and analyzing function for ECG parameters to reduces the doctor’s burden and improves work efficiency. With a high resolution thermal printer to print out ECG trace,describing the trace clear and accurate,annotation as well as related parameters for diagnostic reference. 12-lead ECG simultaneous acquisition. Adapt 110-240V, 50/60Hz AC power supply. Specifications:           Lead     standard 12 leads           lead acquisition     synchronously 12 leads           Input circuit     Floating; Protection circuit against  Defibrillator effect           Input Impedance     ≥50MΩ           Input circuit current     ≤0.0.05μA           Record mode     Automatic: 3CH×4+1R, 3CH×4,  3CHx2+2CHx3,3CHx2+2CHx3+1R,6CHX2; Manual: 3CH, 2CH, 3CH+1R, 2CH+1R; Rhythm: Any lead selectable.           Filter     EMG Filter: 25 Hz / 30 Hz / 40Hz/75 Hz /  100 Hz / 150Hz DFT Filter: 0.05 Hz/ 0.15 Hz AC Filter: 50 Hz / 60Hz           CMRR     >100dB           Patient current leakage     ＜10μA           Input Circuit Current     ＜0.05µA           Frequency Response     0.05Hz~150Hz (-3dB)           Sensitivity     2.5mm/mV, 5 mm/mV, 10 mm/mV, 20 mm/mV           Anti-baseline Drift     Automatic           Time constant     ≥3.2s           Noise level     ＜15μVp-p           Paper speed     12.5 mm/s, 25 mm/s, 50 mm/s           Recording mode     Thermal printing system           Paper specification     80mmx20m paper roll           LCD display     7” graphic LCD           Safety classification     IEC60601-1 class I, type CF           Power supply     AC: 100~240V, 50/60Hz, 30VA~100VA                DC: 14.8V/2200mAh, built-in lithium  battery           Fuse     AC220V±10%  2*Φ5×20mm,T2A/250V   AC time lag                AC110V±10%  2*Φ5×20mm,T4A/250V   AC time lag        Package List: ECG Machine×1 ECG Lead Wire×1 Limp Clip×4 Chest Suction Ball×6 Thermal Printing Paper×1 Fuse×1 Power Cable×1