pinout on CMS50F o2 meter

It has been a while, I have been in Alaska for 2 years helping care for my daughter. She just had a Spinal Cord Stimlator put in (to replace one that failed 2 years ago, but when they went to replace it, they irritated the nerves and had o ake everything out.)

While I have been up here, I had my daughter use my CMS50F 02 meter for a whole. She has sleep apnea but cannot tolerate the mask. AT least I could track the 02 levels and see how bad things were.

Her o2 levels remained above 94, so I was not to worried.

BUT she managed to break the sensor on the CMS50F. It uses the round connector for the o2 sensor.


I look online, and it looks like the new replacement sensors are using the usb connector. My CMS50F has a usb connector, but I use it to charge and download the data.
I was also in the hospital recently and I kept two of the 02 sensors that they used. I am thinking that I can rewire them to the CMS50F,

So the questions:
Does anyone know the pinout of the CMS50F?
I suspect that I have to connect to the round pin connector, but does anyone know if I can connect the sensor to the usb port?

Thanks for the help.

I also hope that everyone here has been doing well.

How many wires are there? I did a quick Google search and didn't see anything. Does the old sensor have same color scheme and new one?

have not bought the new one. I was going to try and reuse the one from the hosp first. The sensor does not fit my daughters fingers very well and I was going to mold up a new one to fit her finger, after I figured out the wiring.

I have also lost the original one....... which os frustrating because I need the round connector...... If I can connect it to the usb, I will use that interface..... but I would be surprised if it worked.

I suspect that they changed the design because of problems with bent pins on the old one, and it saved them money to only have one connector.

I doubt there is anyone who has figured it out and I don't think they will give out that info . Trial and error may need only option. Only other thought that probably won't pan out is I wonder if patent may have that information? Pretty sure you can look up patents.

???? https://www.google.com/url?sa=t&source= ... fe-QzJfGhD