... circuit:Floating,Protection against defibrillator effectInput circuit current:≤0.1μAInput Impedance:>50MΩPatient current leakage:<10μ ... ACalibrating voltage:1mV±3%Voltage tolerance:±500mVTime constant:>3.2sFrequent response:0.05Hz~160HzNoise level:≤15μVp- ... 3%)Sensitivity:Auto,2.5,5,10,20,40mm/mVRecorder:High resolution thermal printer digital three channel ECG machine with 5.7" screen ...