... as the referenceAmplitude: 0.5,1.0,1.5 and 2.0mVThe accuracy of Amplitude: ±2%ECG Rate: 15,20,25,30,40 ... , 280, 300, 320, 340 and 350 BPMThe accuracy of ECG Rate: ±1%RespirationRespiration Rate: 0 (Apnea), 15, 20, 30, 40, 60, 80, 100 ... , 1.0 and 3.0 ΩBaseline Impedance:500,1000,1500 and 2000Apnea: 12 s, 22 s, 32 sECG simulator with adjustable heart rate ...