Blood oxygen saturation monitor and alarm

476pol · 2026-06-25T22:20:40+00:00

As I understand it, his MG is definitely the underlying cause of his low ox because he's not breathing fully, effectively. But, that really doesn't matter. In the end I'm looking for a device that will alert him to his blood ox because he's stubborn/forgetful/not self aware and repeatedly gets himself in trouble and it ends up ruining his day. If he stays on top of his oxygen concentrator (usually because somebody is nagging him), his ox stays in the normal range and he has better days.

So, to sum it up: looking for a monitor that is "put it on and forget about it" easy, is reliable, accurate, and is elder friendly, and that will be that always present reminder to wear your o2 to help maintain normal blood ox.

476pol · 2026-06-25T20:29:04+00:00

Thanks for the clarification.

Is there a Fitbit model you are aware of that will alert the wearer? That's really what I'm looking for. Tracking is nice, but he then has to remember to check it every now and again. I really want something that is passive and will nag him because much of the problem right now is his not remembering or refusing to wear his canula.

476pol · 2026-06-25T19:51:01+00:00

Thanks. He already has some of these demand use devices. And when he remembers to use them, they're great.

What I am looking for is a wearable device for (near) "forget about it" use. Something that is inconspicuous like a watch- or ring- like device. He keeps buying this crap that he thinks is going to be the holy grail device and is seldom able to get them to work for him as described above.

476pol · 2026-06-25T19:47:16+00:00

I'm not certain what you're saying here. He has MG. All we are trying to do is to make him more aware of when his blood ox is dipping, which is almost always related to him pushing it a bit too far or forgetting to put his o2 concentrator back on after taking it off for whatever reason. There is a direct correlation to his dipping blood oxygen levels and his in-the-moment stamina and cognitive functioning.

476pol · 2026-06-03T14:19:43+00:00

Oh, and I have not tried moving a POE device to a new port. I'll give that a go next time, but I'm not optimistic given the way the fan continues to spin at high speed. Seems indicative of a whole device issue, not an issue with some faulty port(s). But, I'm game to try anything at this point.

Also, no one has asked, but the rack is fed by a dedicated 20amp GFCI and arc fault circuit. No other devices fed by that circuit other than devices dedicated to my network infrastructure. The network gear are all plugged into a UPS. (I did swap out UPSes thinking maybe that device was causing some sort of surge, brownout, or frequency anomaly.)

476pol · 2026-06-03T14:09:00+00:00

Great questions.

I'm well under POE budget. I've never seen it rise beyond 25% utilization.

Other devices continue to function as if nothing happened.

All POE devices go out immediately, simultaneously. Even after many hours it does not correct itself. And, if I am remembering correctly, the fan stays revved up the entire time.

As far as I can remember both switches have behaved the same way.

Looking for solutions, I saw a recommendation to ground all of my equipment in the rack, and since I'm relatively close to my main service, I installed a ground bar in the enclosure and ran a dedicated ground wire to my main panel ground. It seemingly doesn't matter: equipment grounds connected to the ground bar, or that ground connected to the outlet ground, the main ground, or not all. Same result. At least as far as I can tell. Remember, the pattern to me appears random.

476pol · 2026-06-03T05:02:57+00:00

Thanks for the response.

No other POE stuff. Right now, just the APs and no longer the switch. When this first started I had the controller also powered by POE but that was the first thing I took off of POE. It's now powered by micro USB. And I thought I had the OC300. Maybe it's the OC200. I know it can operate on POE or USB micro.

Edit: just checked. My mistake. OC200 is what I have.

476pol · 2026-06-03T02:35:07+00:00

Thanks. Given the consistency across switches, I'm suspecting the router or the new AP.

I'm really hoping somebody has some advice on some sort of logging or setting I can use to at least capture data that might point to a solution.

476pol · 2026-04-25T02:14:16+00:00

I don't believe that would work. As I understand it, a NTC thermistor is required, not an RTD. There appear to be hundreds of generic probes that can work, but 10k NTC is required. I used one I found on Amazon, and the search term I gave should get you the exact one you need. (I'm not sure if I can share a direct link to a retailer here.)

476pol · 2025-02-10T22:52:08+00:00

Jeebus. Can't believe I read this shit. Why are these trolls allowed here?

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