The Contec CMS50NA Pulse Oximeter is a compact and lightweight fingertip device designed to quickly measure blood oxygen saturation (SpO₂) and pulse rate.
It features a rotatable multi-directional TFT color screen with adjustable brightness and provides numerical SpO₂ and pulse rate readings along with a real-time pulse waveform and bar graph.
With its compact dimensions, lightweight construction, soft hypoallergenic silicone finger-clip chamber, and battery-powered operation, the CMS50NA is designed for convenient fingertip monitoring.
✅ Key Features
- Measures SpO₂ and pulse rate
- Compact fingertip design
- Rotatable multi-directional TFT color display
- Adjustable screen brightness
- Numerical SpO₂ display
- Numerical pulse rate display
- Real-time pulse waveform
- Pulse intensity bar graph
- Automatic shut-off after approximately 5 seconds without a signal
- Soft hypoallergenic silicone finger-clip chamber
- Powered by 2 AAA alkaline batteries
- Approximately 20–30 hours of continuous working life
- Lightweight design of approximately 50 g including batteries
SpO₂ Measurement
The CMS50NA measures blood oxygen saturation (SpO₂) through the finger.
SpO₂ Range
0%–100%
SpO₂ Accuracy
±2% between 70% and 100%
Pulse Rate Measurement
The device also measures pulse rate and displays the numerical pulse rate value alongside the pulse waveform and bar graph.
Pulse Rate Range
30–250 bpm
Pulse Rate Accuracy
±2 bpm
Rotatable TFT Color Display
The CMS50NA features a rotatable, multi-directional TFT color screen.
The display provides:
- SpO₂ value
- Pulse rate
- Real-time pulse waveform
- Pulse bar graph
Screen brightness can also be adjusted according to viewing requirements.
Pulse Waveform & Bar Graph
In addition to numerical readings, the CMS50NA provides visual pulse information through a real-time pulse waveform and bar graph.
This allows the user to observe the pulse signal alongside the displayed SpO₂ and pulse rate values.
Automatic Shut-Off
To help conserve battery power, the CMS50NA automatically powers off after approximately 5 seconds when no signal is detected.
Comfortable Finger-Clip Design
The device features a soft, hypoallergenic silicone finger-clip chamber, designed to provide a comfortable fit during fingertip measurement.
Battery Operation
The CMS50NA operates using two AAA alkaline batteries.
The supplied specifications state an approximate continuous working life of 20–30 hours, depending on operating conditions.
Technical Specifications
| Specification |
Details |
| Product |
Contec CMS50NA Pulse Oximeter |
| Type |
Fingertip Pulse Oximeter |
| Measurement |
SpO₂ & Pulse Rate |
| SpO₂ Range |
0%–100% |
| SpO₂ Accuracy |
±2% between 70%–100% |
| Pulse Rate Range |
30–250 bpm |
| Pulse Rate Accuracy |
±2 bpm |
| Display |
Rotatable multi-directional TFT color screen |
| Brightness |
Adjustable |
| Pulse Waveform |
Real-time display |
| Pulse Bar Graph |
Yes |
| Auto Shut-Off |
Approximately 5 seconds without signal |
| Dimensions |
Approx. 60 × 34 × 33 mm |
| Weight |
Approx. 50 g including batteries |
| Power Supply |
2 × AAA alkaline batteries |
| Battery Life |
Approximately 20–30 hours continuous operation |
| Finger Chamber |
Soft hypoallergenic silicone |
Product Disclaimer
Specifications and included accessories may vary by production batch, market, or manufacturer revision. Please verify the exact configuration with the seller before purchase. This product information is intended for general product guidance and does not replace professional medical advice, diagnosis, or treatment.
