The Symphony N-3000 from Nellcor provides noninvasive, continuous monitoring of the oxygen saturation of arterial hemoglobin (SpO2) and pulse rate (measured by an SpO2 sensor). The monitor is intended for use on adult, pediatric, and neonatal patients in all hospital areas, hospital-type facilities, and home environments. It may be used during intra-hospital transport when powered by its internal battery. The N-3000 can operate as a standalone monitor or it can be connected to (stacked with) other Nellcor Symphony instruments, such as the N-3100 blood pressure monitor and N-3200 display/printer. When used with the N-3200 display/printer, the instruments can display and print out plethysmographic waveforms and SpO2 and pulse rate tabular data.