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- Reliable High-Accuracy Sensors: The CMS50M is precision-engineered to deliver an accuracy rating of ±2% within the crucial 70% to 100% SpO2 testing range, ensuring you can trust your daily health metrics.
- Bright LED Display Screen: Results are clearly displayed on a crisp, high-contrast LED screen. This allows users of all ages to effortlessly read their SpO2 percentages and pulse beats per minute (BPM) in low-light or indoor environments.
- Comfortable Ergonomic Fit: The interior finger chamber is molded from soft, medical-grade silicone that comfortably conforms to a wide range of finger sizes—making it suitable for both adults and teenagers.
- Energy-Saving Auto Shut-Off: Designed with battery efficiency in mind, the oximeter automatically powers down within 5 seconds of removing your finger, maximizing the lifespan of your two AAA batteries.
- Compact & Highly Portable: Weighing just a few grams, it fits easily in your pocket, medical kit, or travel bag, keeping peace of mind within arm’s reach wherever you go.
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- Product Name: Contec CMS50M Finger Pulse Oximeter
- Display Screen: High-Contrast Digital LED Display
- SpO2 Range & Accuracy: 0% – 100% Measuring Range (±2% Accuracy between 70%–100%)
- Pulse Rate Range & Accuracy: 30 BPM – 250 BPM (Accuracy of ±2 BPM or ±2%)
- Product Weight: 0.05 kg (50 grams without batteries)
- Product Dimensions: 5.7 cm (Length) × 3.2 cm (Width) × 3.3 cm (Height)
- Power Requirements: 2 × 1.5V AAA Alkaline Batteries
For the most accurate reading, sit completely still and keep your hand flat and steady while taking a measurement. Avoid wearing dark nail polish or artificial nails, as these can interfere with the red and infrared light sensors inside the chamber. To clean, gently wipe the silicone probe interior with a soft cloth dampened with medical alcohol. Never submerge the oximeter in water or spray liquid cleaner directly onto the body.
While both devices provide the same clinical accuracy for SpO2 and pulse rate, the CMS50M features a slightly different LED layout and aesthetic design. Both are excellent, highly reliable options for daily home health spot-checks.
No. This oximeter is designed for stationary spot-checks. Moving your hands or fingers vigorously during a reading can create movement artifacts, causing the sensor to show inaccurate data or delay your results.
The CMS50M is a straightforward, budget-friendly model focused on quick visual reading and does not feature audible alarms or programmable alert thresholds.








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