15 inch patient monitor USA Brand ECG, HR, RESP, NIBP, SPO2, ... dim situation 4) SD memory card(optional) 5) Dual alarm light 6) Nurse call functionStandard ConfigurationECG, HR, RESP, ... 100-240V 50/60Hz Power Input≤100VAFuseT2AL/250V, Φ5×20 (mm)Safety classCategory IHardware Specifications Size and ... time after the first alarm if low battery≥5 minutes udio indicator SpeakerQRS Sound with Pitch ToneAlarm ...