Nonin 9550 Onyx II Fingertip Pulse Oximeter is ideal for use in any situation where a fast and accurate reading of blood oxygen saturation and pulse rate is needed due to its portability and functionality. This smallest fingertip oximeter is used for spot-checks as well as short-term monitoring. Automatically turns on for fast, easy spot checks.
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 costeffective 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 Nonin 9550 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.
The portability and functionality of the Nonin 9550 Onyx II makes it a valuable tool in any situation where a fast and accurate reading of blood oxygen saturation and pulse rate is needed.
Green Light: Good Reading, Yellow Light: Fair Reading, Red Light: Poor Reading
- Small & Lightweight
Carry the Onyx II anywhere – on a lanyard, in a carrying case or in your pocket. It weighs less than 2 oz.
- Large Bright LED Display
SpO2 and Pulse Rate that can be read from any angle, day or night.
- Pulse Quality Indicator
Brilliant, easy-to-see LED provides a quick and accurate assessment of patient readings.
- Pediatric to Adult Finger Sizes
Accommodates a wide range of finger thicknesses, 0.3 - 1.0 inch (8 mm to 26 mm).
- Automatic On/Off
- Energy Efficient
A new turn-off mechanism allows two AAA batteries to provide approximately 2500 spot-checks or 21 hours of continuous operation.
- Durable & Reliable
Rugged enough to be used in the most B2demanding situations. The Onyx II has the US Army and US Air Force aeromedical certification for use in helicopters.
- Made in the USA with 4 Year Warranty!
||Nonin Onyx 2 9550 Includes:
- Model 9550 Unit Oximeter
- Lanyard Cord
- FREE Custom Carry Case
- 2 'AAA' Batteries
- Manual on CD-ROM
- 4 year warranty
- FREE VitaminE Hand Sanitizer Pen
1.27 cm (3.23”) W x 2.20 cm (5.59”) H x 1.31 cm (3.33”) D
Oxygen Saturation Display Range
Pulse Rate Display Range
Oxygen Saturation Declared Accuracy Range
70-100% SpO2 ±2 digits
Low Perfusion Oxygen Saturation Declared Accuracy Range
70-100% SpO2 ±2 digits
Pulse Rate Declared Accuracy Range
20-250 BPM ±3 digits
Low Perfusion Pulse Rate Declared Accuracy Range
40-240 BPM ±3 digits
Measurement Wavelengths and Output Power
Red: 660 nanometers @ 0.8 mw maximum average
Infrared: 910 nanometers @ 1.2 mw maximum average
+32° to +104°F / 0° to +40°C
-22° to +122°F / -30° to +50°C
Up to 40,000 feet / 12,192 meters
Up to 4 atmospheres
Battery Life (Continuous)
Approximately 2,500 spot-checks based on 21 hours of operation using two AAA-size alkaline batteries, calculated at 30 seconds per spot-check
Battery Life (Storage)
4 years, minimum
Mode of Operation
Enclosure Degree of Ingress Protection
Degree of Protection
Type BF-Applied Part