Specification: Input Circuit: Floating; Protection against Defibrillator effect Lead: Standard 12 leads, Lead change automatically Patient Current Leakage: <10 μ A μ A Input Impedance: ≥ 50 ΜΩ0 ΜΩu;Ω0 ΜΩ Calibrating Voltage: 1mV ± 3%usmn; 3%usmn; 3% A/D Conversion: 12 bit Display: 320× 240LCD 240LCD 240LCD Frequency Response: 0.05Hz-150Hz Time Constant: ﹥3.2secondsonds CMRR: ﹥80d﹥100dB(with filter)filter) Paper Speed: 25, 50mm/s± 3%usmn; 3%usmn; 3% Recording Paper: 210mm× 30m, high-speed rolled rolled roll Input Circuit Current: ≤ 50nA50nA50nA Safety Standard: IEC class I, type CF Sensitivity: 1/2, 1, 2(cm/mV) Skin Voltage Tolerance: ± 300mVn; 300mVn; 300mV Noise Level: <15 μ Vp-pu; Vp-p Weight: 5.1kg Feature: Simultaneous 12 leads acquisition and printing Automatic measurement and interpretation-R analysis 12 leads simultaneous display on large backlight LCD 320× 240es; 240es; 240 Digital design and filter; Thermal array printer Recording on A4 size paper Baseline auto-adjustable; Rhythm lead selectable DC/AC autoexchange, built-in rechargeable battery. Power supports continuously working for more than 50 patients 16 pieces of unzipped ECG date and waveforms are stored for copy and re-call Inner handhold designed for portability