Skip to product information
1 of 6

My Store

CMS50DL Fingertip Pulse Oximeter

CMS50DL Fingertip Pulse Oximeter

Regular price £31.99 GBP
Regular price Sale price £31.99 GBP
Sale Sold out
Tax included.


This compact, user-friendly device provides precise and reliable measurements of your blood oxygen saturation (SpO2) levels and pulse rate within seconds. The CMS50DL is an essential health gadget for anyone looking to keep track of their vital signs efficiently and effectively. It answers the physician, medical, home health care, sports, and aviation markets' demand for a lightweight, inexpensive monitor for measuring SpO2 oxygen saturation and heart rate. 


The CMS50DL is small, and lightweight, using CMS's uniquely patented algorithms that use dual 'see-through' sensor technology for an accurate measurement. Ideal for Hospitals, Doctors, Home Health Care, Clinics, Aviation, Free Diving / Anaerobic training, Mountain Climbing, Walkers, and Cyclists. 

View full details

Product Features:

Soft Padded Grip:

Insert your index, ring, or middle finger and press the power button. Within seconds the SpO2 and pulse rate will be displayed.

Manufacturers Warranty:

Enjoy total peace of mind with our 12-month manufacturer's warranty.

Long Battery Life:

2500 Spot-Checks or 30 continuous hours.

Package Includes:

  • Fingertip Pulse Oximeter (CMS50DL).
  • Instructional manual (including a short guide to how pulse oximetry and Sp02 measurement work).
  • Blue protective casing.
  • Lanyard.
  • Batteries.

If you require a more advanced oximeter, please choose the CMS50D+ here.

Technical specifications:

Display Format:

Digital tube display.

SpO2 Measuring Range:

0% - 100%. 

Pulse Rate Measuring Range:

30bpm - 250bpm. (Beats per minute)

Pulse Intensity Display: 

Columniation display. 

Power Requirements: 

2 x 1.5V AAA alkaline battery, adaptable range: 2.6V - 3.6V.

Power Consumption: 

Smaller than 25 mA.


1% for SpO2 and 1bpm for pulse rate. 

Measurement Accuracy: 

±2% in stage of 70% - 100% SpO2, and meaningless when stage being smaller than 70% ±2bpm or ±2% (select larger) for pulse rate. 

Measurement Performance in Weak Filling Condition:

SpO2 and pulse rate can be shown correctly when the pulse-filling ratio is 0.4%. SpO2 error is ±4%, pulse rate error is ±2bpm or ±2% (select larger). 

Resistance to Surrounding Light: 

The deviation between the value measured in the condition of man-made light or indoor natural light and that of a darkroom is less than ±1%. 

Optical Sensor: 

Red light (wavelength is 660nm, 6.65mW).

Infrared (wavelength is 880nm, 6.75mW). 

Environment Requirements:

Storage Environment: Temperature: -40°C ~ +60°C. / Relative Humidity: ≤95% / Atmospheric Temperature: 500hPa ~ 1060hPa.

Operating Environment: Temperature: 10°C ~ -40°C. / Relative Humidity: ≤75%. / Atmospheric Pressure: 700hPa ~ 1060hPa.