The device which I purchased was by Anodyne. It is a company out of Florida. They sell to medical providers and so they were reluctant to answer questions regarding my device which they offer ONLY to medical providers (I am not in the medical field). However I do believe the company offers machines with less output for the non-medical consumers.
I found this unit by doing an online search for their products. I found a used model identical to my therapist's office. I paid approx $750.
Note: I watched for several months the physical therapist use the infrared light pads on my feet so I copied her protocol as to strength and length of time.
By no means am I promoting this company or its products. I mentioned in my original post that after doing a "deep dive" into infrared units and reading countless reviews, it appeared that American manufacturers produced more reliable & safer devices. I am sure there are other American manufacturers of safe infrared light devices for nonmedical consumers.
Its a journey ... I get it. My wrist & hand are markedly better ... however my neuropathy, I cannot say one way or the other.