CMS-50E Fingertip Pulse Oximeter with Alarm

$79.00 79.00

Available Options

The CMS50E Fingertip Pulse Oximeter is FDA-approved to spot-check blood oxygen saturation levels and pulse rate. The device’s padded finger chamber was designed to comfortably fit any size finger and deliver a swift reading. The device is battery powered for portability and handheld use. All of the CMS50E’s functions are operated with a single button that is located on the device, and was made specifically for convenient use by physicians, nurses, patients, athletes, and pilots.

The CMS50E Rechargeable Pulse Oximeter was designed with a small but powerful measurement system. The device accurately measures oxygen saturation (Sp02) and pulse rate directly through the finger. The CMS50E was made to detect the presence of low-oxygen levels in the blood, even when the wearer is not actively interacting with the device. 

The device comfortably fits on the finger when in use. The portable, lightweight design is ideal for on the go use or storage in a small space. The pulse oximeter does not require any external wires or probes when taking measurements.



Auditory and visual alarms in the device send alerts to the user when oxygen amounts present in the blood go outside of the range set by the user. Additional alerts show low voltage levels in the CMS50E, or if the device’s placement needs adjustment for proper readings. A battery icon indicator provides a charge status level for the device’s rechargeable battery.

The CMS50E’s bright, multicolored display shows data with sharp text and images. The large screen can be clearly read from many different viewing angles. Screen brightness is adjustable to allow for use in a wide variety of lighting conditions. 

The SpO2 and Pulse Rate readings are displayed as a numeric value, bar graph, and animated waveform. The data imagery presents a clear visual representation of your body’s SpO2 and Pulse Rate levels. The animated images provide a helpful understanding of the reading results.

Unlike most pulse oximeters, the CMS50E features a built-in rechargeable lithium-ion battery. The rechargeable battery can be charged with a computer or by plugging the device into the included power adapter. Battery life for the unit can last for up to 20 working hours with normal usage.

The CMS50E can store up to 24 hours worth of information data history. Using the included software, the data can be transferred to a computer for analysis by a medical professional or physician. The CMS50E includes a data transfer cable that can connect the pulse oximeter to your computer via USB.

This pulse oximeter is ideal for daily activity checks, COPD monitoring, sleep studies, home healthcare spot-checking, and medical professional practices. Many of the CMS50E’s advanced features are normally only seen on less cost-effective and larger pulse oximeters. The CMS50E allows you to intelligently keep track of your body’s health and activity levels for everyday care.


Three Different Models

  1. - CMS50EW: With Bluetooth
  2. - CMS50E: With Wireless Transmitter & Receiver
  3. - CMS50E Basic: No Wireless Transmitter, Receiver or Bluetooth

Package Includes

  1. CMS-50E Unit
  2. Neck/wrist Cord
  3. DC Power Adapter Plug
  4. USB Connector Cord
  5. 3.7V Rechargeable lithium battery (Long Battery Life)
  6. Instruction manual
  7. If ordered, the Wireless Transmitter/Receiver 

 Software Download

CMS-50E Product Videos


Extended Specifications

  • Warranty: 1 year
  • USB cable to sync with PC based software
  • Stores up to 24 hours of measurements
  • FDA Approved
  • Alarm functions
  • 1.36" 65k color OLED display
  • Screen Resolution: 128 x 96
  • SpO2 measurement range: 0% - 100%
  • SpO2 accuracy: 70% - 100%: +/-2%; 0% - 70% unspecified
  • Pulse rate measuring range: 30bpm-250bpm
  • Pulse rate accuracy: +/-2bpm or +/-2% (larger of the two)
  • Resolution: 1% SpO2 and 1bpm pulse rate
  • 3.7v Rechargeable Lithium (Li) battery - Included
  • Recharge via USB connection to PC or 120v wall outlet
  • 20 hour working life expected per charge
  • Charge and discharge no less than 500 times
  • Size: 57mm x 32mm x 30mm (2.24" x 1.26" x 1.18")
  • Range: 0% - 99%
  • Accuracy: 70% - 99%, +/-2%, 0 - 69%, unspecified
  • Resolution: 1%
Pulse Rate
  • Range: 30bpm - 240bpm
  • Accuracy: +/-2bpm or +/-2%
  • Resolution: 1bpm
    Power Supply
    • Requirement: 3.6 V DC- 4.2V DC
    • Battery Type: Interior battery, B F
    • Requirement: 3.7 Voltage rechargeable
    • Lithium battery (included)
    • Automatic power-off after 5 seconds
    • Operating Temperature: 0C - 50C
    • Storage Temperature: -40C - 60C
    • Operating Humidity: 15% - 95%
    • Storage Humidity: 5% - 95%
    • Operating Pressure: 700hPa - 1060hPa
    • Storage Pressure: 500hPa - 1060hPa
      • Size: 57 x 32 x 30 mm
      • Weight: 1.8oz (50g with lithium battery)
      • Type:OLED
      • Parameter: SpO2 (2-digit), PR (3-digit)
      • Bar Graph (6-segment), pleth waveform
      • Adjustable brightness level
      • Types: Measurement out of set limits
      • Low voltage
      • Finger out of position

      Customer Reviews

      Based on 11 reviews
      Stopped working
      A bit erratic in it's response
      Did not receive
      Need to check oxygen levels when traveling.