NONIN, the world leader in fingertip oximetry, has designed years of clinical experience into the Onyx II.

The electronics and sensor are incorporated into the world’s smallest fingertip oximeter, providing a cost-effective solution for spot-checks and short-term monitoring.

Onyx II- not just a new look. Superior performance and unparalleled reliability put vital signs within reach anywhere, anytime.

The Onyx II is ideal for use in any situation where a fast and accurate reading of blood oxygen saturation and pulse rate is needed. Never search for a pulse oximeter or sensor again.

9550 Brochure


Additional information

Oxygen saturation display range

(%Sp02): 0%-100%

Pulse Rate display Range

18-321 beats per minute( BPM)

Battery life

21 hrs of continuous operation using two AAA-size alkaline batteries calculated at 30 seconds per use