Contec CMS50NA OLED Fingertip Pulse Oximeter – SpO2 & Pulse Rate Monitor

The Contec CMS50NA OLED Fingertip Pulse Oximeter is a compact, reliable tool for quick, on-the-go assessment of blood oxygen saturation (SpO2) and pulse rate. Its bright, easy-to-read OLED display shows SpO2, pulse rate, a live waveform, and a bar graph, making it simple to spot trends at a glance whether you’re at home, in the clinic, or on your next adventure.

What makes the CMS50NA stand out

• Clear OLED display with adjustable brightness – Read measurements accurately in varying lighting conditions, from bright daylight to dim evenings.
• SpO2 and Pulse Rate plus waveform and bar graph – Visualize your readings in real time, not just numbers, helping you interpret short-term changes quickly.
• Battery awareness – Built-in battery voltage indicator keeps you informed before readings drop, reducing surprises when you need it most.
• Flexible display modes – Switch between display options to suit your preference for data presentation during workouts, travel, or rest.
• Compact, travel-friendly design – Dimensions of 60mm x 34mm x 33mm and low power draw (≤30mA) make it easy to carry in a bag or pocket.
• Reliable performance across conditions – SpO2 measurement range 0–100% with ±2% accuracy between 70–100%; PR range 30–250 bpm with ±2 bpm (or ±2%), whichever is greater; proven tolerance to ambient light with deviations within ±1% under different lighting.
• Deeply practical in daily use – Measurement remains stable even when finger pressure varies; performance under weak filling conditions shows SpO2 error around ±4% and PR error around ±2 bpm or ±2%, whichever is greater.
• Safety-focused design – BF applied part construction provides a thoughtful approach to user safety in everyday monitoring.

Why you’ll trust this oximeter

Pulse oximeters provide an estimate of oxygen saturation and heart rate. While helpful for monitoring trends, it’s important to establish a personal baseline when you’re healthy and at rest and to consult a licensed healthcare professional for interpretation that accounts for individual factors such as skin tone and physiology. The CMS50NA is designed to deliver dependable readings for routine wellness checks, light physical activity, travel, and home monitoring, helping you detect potential hypoxia early and seek care if needed.

Who should consider the CMS50NA

• Active individuals and athletes who want a quick SpO2 and pulse-rate snapshot during training or high-altitude outings.
• Travelers seeking a compact monitor to complement routine wellness checks on the go.
• Home caregivers and patients who need a simple way to track oxygen saturation and heart rate between medical visits.
• People who appreciate a visible waveform and bar graph for intuitive understanding of readings.

How to use

1. Insert two AAA batteries into the device (as indicated by its power specifications).
2. Remove the finger from the device, then place a fingertip into the sensor clip with the nail facing upward.
3. Stay still for a few seconds while the CMS50NA captures SpO2 and pulse rate; view the results on the OLED screen along with the waveform and bar graph.
4. If you notice a low battery indicator, replace the batteries to maintain accurate readings.
5. Switch display modes or adjust brightness as needed for readability in different environments.

Care, maintenance, and tips

• Wipe the sensor with a clean cloth between uses; avoid submerging the unit in water.
• Avoid exposing the device to extreme temperatures or moisture to preserve sensor accuracy and longevity.
• To get meaningful trends, use the oximeter over time and note your baseline readings during rest.

What’s included and how it compares to alternatives

The CMS50NA emphasizes a straightforward, reliable experience: an OLED display, waveform visualization, adjustable brightness, and low-power design in a compact form. It provides essential SpO2 and pulse-rate data with practical readouts (bar graph and waveform) that help you interpret trends without clutter. When considering alternatives, look for:

• Display clarity and brightness options that suit your typical lighting conditions.
• Measurement stability across common real-world scenarios, including varying finger pressure and ambient light.
• Battery life and ease of replacement, especially for travel or continuous monitoring needs.

Important safety and interpretation notes

Oximeter readings are estimates and can be influenced by factors such as skin pigmentation, perfusion, and physiological variability. Always establish a healthy baseline while resting and consult a licensed healthcare professional to interpret readings that may be affected by individual traits. If you notice persistent abnormalities or symptoms, seek medical guidance promptly.

Specifications at a glance

• Measurement: SpO2 and Pulse Rate
• Display: OLED with adjustable brightness; waveform and bar graph
• SpO2 range: 0–100%; Accuracy: 70–100% ±2%; 0–69% unspecified
• PR range: 30–250 bpm; Accuracy: ±2 bpm or ±2%, whichever is greater
• Performance in low perfusion: SpO2 error ±4%; PR error ±2 bpm or ±2%
• Light resistance: ≤±1% deviation under various lighting
• Power: two AAA batteries
• Working current: ≤30 mA
• Safety: BF applied part
• Dimensions: 60 mm (L) × 34 mm (W) × 33 mm (H)

Empower your health monitoring with the Contec CMS50NA OLED Fingertip Pulse Oximeter—the practical, portable way to capture SpO2 and pulse rate readings with confidence wherever you go.