CE CertifiedDigital Single Channel ECG Machine High resolution thermal array printer Isolated input circuit with protection against defibrillation and pacemaking 192x64 graphic LCD to display setting menu and operating conditions in 4 line, and ECG waveform 2 channel printout format for recording rhythm lead and standard 12 lead ECG Dual power operation, AC and NI-MH battery supporting 1 hour operation AC, EMG, DFT filter