Nonin Onyx II 9550 Fingertip Pulse Oximeter

The Nonin Onyx® II 9550 is a compact, professional-grade fingertip pulse oximeter designed for quick and accurate spot-checks of oxygen saturation (SpO₂) and pulse rate in adults and children. Lightweight yet durable, it’s suitable for use in clinical, EMS, and home environments. The device fits finger thicknesses from 0.8 to 2.5 cm and provides rapid, reliable readings even in low-perfusion conditions. A bright dual-color LED display clearly presents SpO₂ and pulse rate values, while a three-color...