CMS50D+ OLED Fingertip Pulse Oximeter with PC software

Free UK delivery. Please note that the Contec CMS50D+ is currently (during the current pandemic) supplied from the manufacturer without a carry case.

Face masks are also available for immediate shipment from £6 per mask here.

The CMS50D+ 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. Pulse oximeters can enable you to detect a fall in oxygen saturation levels before the onset of severe symptoms, and take action quickly.

The CMS50D+ Finger Pulse Oximeter is very small & lightweight, and uses CMS’s uniquely patented algorithms that use dual ‘see-through’ sensor technology for the accurate measurement of blood oxygen saturation levels and heart pulse rate.

Ideal for Hospitals, Doctors, Home Health Care, Clinics, Aviation, Free Diving / Anaerobic training, Mountain Climbing, Walkers & Cyclists.


Avaiability: In Stock
item with Free Delivery

£67.20 (incl. VAT)




The CMS50D+ has a colour, multi-direction LCD screen for displaying oxygen saturation (SpO2) and pulse rate, which can be displayed in numerical, waveform or graph formats. This advanced pulse oximeter also allows for the setting of alarms, can emit a pulse rate sound, and data can be stored and uploaded to your computer.



  • Display Mode: 0.96″ Dual color OLED display
  • Screen Resolution: 128*64
  • SpO2 Measuring Range: 0%~100% (the resolution is 1%)
  • Accuracy: 70%~100%: ±2%
  • PR Measuring Range 30bpm~250bpm, (the resolution is 1bpm)
  • Accuracy: ±2bpm or ±2% (whichever is greater)
  • Measurement Performance in Weak Filling Conditions: SpO2 and pulse rate can be shown correctly when pulse-filling ratio is 0.4%. SpO2 error is ±4%, pulse rate error is ±2 bpm or ±2% (whichever is greatest).
  • Power Consumption: less than 80mA
  • Voltage: DC 2.6V~3.6V
  • Power Supply: 1.5V (AAA size) alkaline batteries × 2 (not supplied)
  • Battery working time: approximately 32 hours.


Dimensions: 58.5(L) × 31(W) × 32 (H) mm
Weight:About 50g (with batteries inserted)

CE and FDA certified.

Additional information

Weight0.3 kg





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