Advanced Finger Pulse Oximeter OLED Display with Sleep Monitor
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Advanced Finger Pulse Oximeter OLED Display with Sleep Monitor

Model: C101A2
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IMDK Finger Pulse Oximeter 

The IMDK finger pulse oximeter uses the latest oxygen sensor technology to accurately determine the level of oxygen in the blood (SpO2) in 8 seconds. The measurement range is 70% - 99% with ±2% accuracy and ±1% of resolution. The IMDK finger pulse oximeter fits every finger size and provides 6,000 spot checks. It provides easy operation with only one button and comes with a lanyard for easy transport. An alarm beeps to indicate oxygen level and heart rate. It automatically powers off after 8 seconds.

Sleep Monitor
Perfusion Index (PI) will improve the reliability of the readings dramatically. The PI conveniently informs you of the strength of your pulse. The sleep monitoring function can keep the data record for 8 hours. It will start analyzing after monitoring for more than 2 hours.
Click here to read the instruction on how to read the data.

Multi-Direction Display
Multidirectional display: 4 directions and 6 modes to allow you to view your results in any direction.

Alarm Function
The alarm will release warning sounds once the measured values go beyond the setting which gives you an immediate response.

Key Features:

  • OLED display for easy reading, 4-direction adjustable
  • Sleep monitoring up to 8 hours
  • Simultaneous display for testing value and bargraph
  • Low-power consumption
  • Low battery voltage indicator
  • Auto power off: 8 seconds automatic shutdown
  • Very light: weight only 2.2 oz with 2 AAA alkaline batteries (batteries not included)
  • Fits every finger size
  • 6,000 spot checks
  • FDA approved


  • SpO2

             Measurement range: 70% - 99%
             Resolution: ±1%
             Accuracy: ±2% (70%-99%), unspecified (<70%)

  • Pulse Rate
    Measurement range: 30 BPM - 240 BPM 
    Resolution: ±1%
    Accuracy: ±2bpm or +2% (select larger)
    Low Perfusion ≤0.4%

  • Power: 2AAA 1.5 V alkaline battery (not included in the package)
    Supply voltage: 2.6-3.6V

  • Air Pressure: 70kPA - 106 kPa
  • Working Current: ≤ 30 mA 
  • IMDK finger pulse oximeter user manualDownload
Model C101A2
HCPCS Code E0445
Machine Weight 1.76 oz (50g)
Machine Size Only 2.36 * 1.37 * 1.18 inches (60*40*30mm)
Power Consumption ≥30mAh
Color Black
Power 2 AAA 1.5 V alkaline battery
  • IMDK C101A2 Finger Pulse Oximeter 
  • User Manual
  • Lanyard

Note: batteries are NOT included

John F 10/05/2020
1 of 5 Stars!

Worked fine the first few times I used it. Now the readings are all over the place. SpO2 as low as 80 and pulse rate as high as 300. If I turn it off and back on it occasionally gives correct numbers, but out of nowhere it can start giving screwy readings again. It's basically useless.

Hi, Thank you for your review! Please contact us so we can get this resolved for you. RESPSHOP 866-936-3754

FANG Y(Verified Purchase) 06/10/2020
1 of 5 Stars!

This product is made in China. I was very disappointed when it arrived. It looks like a product bought on Taobao in China. I did not expect to buy Chinese products in Respshoh and it cost me $34.99

Steve G(Verified Purchase) 05/20/2020
5 of 5 Stars!

Respshop website is easy to use with a wide selection of repertory device and accessories all at a good price. The Pulse Oximeter was shipped fast and arrived in a timely manner. The product works as described for SpO2 and BPM readings. Screen adjusts to multiple orientations at the push of a button making it easy to read no matter which finger or which hand the device is connected to.

This is a quality product providing rapid and accurate readings. I would highly recommend this device.

Keith O 05/07/2020
4 of 5 Stars!

Bought this elsewhere (about same price of $59.00). Arrived on 5/4. Product itself seems fine. Is it medically accurate? (Meaning: Should a medical practitioner rely upon it for diagnosis? I'm not a doctor...but please don't! Is it fine for the average person to get a better understanding of how their body works? Yes.

Joseph S 05/08/2020
2 of 5 Stars!

Bought elsewhere (Amazon, dumb me, paid $6.78 more.) Impossible to read data out-of-doors, even in shade (jogging, tennis, etc.) Even in-doors, display is far too dim - for out-of-doors activity (except maybe at night) product is useless.

Joachim F 01/19/2021
2 of 5 Stars!

The display is VERY dim. Can't use it outside in daytime.

Thank you for your feedback.
I am sorry about this, please contact us so we can get this taken care of for you!
Your Respshop Team!

Kirsty D 05/06/2020
4 of 5 Stars!

Functions as described. Accuracy is questionable- often get great variations in pulse/ bpm and Blood oxygen readings taken just minutes apart. Expensive so I expected better accuracy.

Leticia W 05/07/2020
3 of 5 Stars!

I bought this oximeter because it states that it does sleep monitoring. However, this is wrong. On the instructions, it plainly states not to use it for more than 2 hours at a time.

Wanda F 05/12/2020
2 of 5 Stars!

Received product in good condition, however was disappointed to find that just since I ordered it and now, Reshop now has it priced at %59.00.

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Have a question on this item? Ask here and we will answer it in 12-24 hours, usually in a few business hours! Questions and answers will appear here after we answer. You may also have email notifications.
How is this thing supposed to stay on your finger while you're sleeping?
Hello, there is a little grip when you're wearing it so it should stay on in the night. You may be able to find a sleeve for it or use a little bit of masking tape to help secure it, but you don't want the tape to be too tight on the finger.
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