3 channel ECG machine provides automatic interpretation, additional features include support touch panel and keypad input ways, manual/Auto working modes, 120 seconds ECG wave freeze and replay function, lead-off detection and alert, built in USB/RS232 interface(ECGNET software optional), AC power supply at 90-240V,50/60Hz, Simultaneous 12 leads acquisition and 3-ch recording with high resolution thermal printer, supportSDcard storage, Built in rechargeable Li-ion battery support less than 3 hours continuously work, 4.3 inch Color TFT LCD display ECG wave and friendly menu setting and digital filtering, resisting baseline drift, AC and EMG interference.