The Contec CMS50D1A Pulse Oximeter is a compact fingertip pulse oximeter designed to measure pulse oxygen saturation (SpO₂) and pulse rate through the finger.
The device features a compact display for viewing SpO₂, pulse rate, pulse intensity bar graph, and pulse waveform. Its automatic direction-changing function allows the screen orientation to adjust for different viewing angles.
The CMS50D1A is powered by two AAA batteries and includes automatic standby, adjustable screen brightness, and a low-voltage indication function.
✅ Key Features
- Measures SpO₂ and pulse rate
- Fingertip measurement
- 0.96-inch dual-color OLED/LCD display
- SpO₂ value display
- Pulse rate value display
- Pulse intensity bar graph
- Pulse waveform display
- Automatic direction-changing/rotation function
- Adjustable screen brightness
- Auto standby function
- Low-voltage/low-battery indication
- Powered by 2 AAA batteries
- Approximately 20 hours of continuous working time
- Automatically powers off within 5 seconds after finger removal
- Lightweight design of approximately 50–57 g including batteries
SpO₂ Measurement
The CMS50D1A is designed for measuring blood oxygen saturation (SpO₂) through the finger.
SpO₂ Range
0%–100%
Accuracy
±2% in the 70%–100% range
The SpO₂ value is displayed directly on the device screen.
Pulse Rate Measurement
The device also measures and displays pulse rate.
Pulse Rate Range
30–250 BPM
The display also provides a pulse intensity bar graph and pulse waveform for visualizing the pulse signal.
0.96-Inch Display
The CMS50D1A features a 0.96-inch dual-color OLED/LCD screen.
The display provides:
- SpO₂ value
- Pulse rate
- Pulse intensity bar graph
- Pulse waveform
Automatic Direction-Changing Function
The automatic direction-changing function allows the display orientation to rotate automatically, making it easier to view the readings from different angles.
Adjustable Screen Brightness
The screen brightness can be adjusted according to the user's viewing requirements.
Auto Standby
The CMS50D1A features an auto standby function. According to the supplied information, the device automatically powers off within approximately 5 seconds after the finger is removed from the probe.
Battery & Low-Voltage Indication
The pulse oximeter operates using two AAA batteries and provides approximately 20 hours of continuous working time according to the supplied specifications.
A low-voltage indication symbol appears when the battery voltage becomes too low for normal operation.
Technical Specifications
| Specification |
Details |
| Product |
Contec CMS50D1A Pulse Oximeter |
| Measurement |
SpO₂ & Pulse Rate |
| Measurement Method |
Finger |
| Display |
0.96-inch dual-color OLED/LCD |
| SpO₂ Range |
0%–100% |
| SpO₂ Accuracy |
±2% in 70%–100% range |
| Pulse Rate Range |
30–250 BPM |
| Pulse Rate Display |
Yes |
| Bar Graph |
Pulse intensity bar graph |
| Pulse Waveform |
Yes |
| Direction Changing |
Automatic |
| Screen Brightness |
Adjustable |
| Auto Standby |
Yes |
| Auto Power-Off |
Within approximately 5 seconds after finger removal |
| Battery |
2 × AAA |
| Continuous Working Time |
Approximately 20 hours |
| Low-Voltage Indicator |
Yes |
| Weight |
Approximately 50–57 g including batteries |
| Form Factor |
Compact fingertip device |
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.
