... alarm for lead-off, no paper, no batteryBuilt-in ECG simulatorBuilt-in rechargeable lithium batteryAutomatic adjustment of baseline for ... optimal recordingRS232 port to transmit ECG dataLead mode: Standard, or EuropeanBuild-in help key: ... , and extendable to 150 in a SD card.Saved ECG waveforms replaying, printing or being transmitted to PCCE Certified ...