Explanation of Relax Sauna's "loving light"

"From a 5 to about a 2 (pain level). I still have some residual pain in my back. I've only been in for about 3 minutes so far.
My back has gone from a 7 initially, to probably about a 2 at max and it has relieved all the rest of it."
Another person asks "What is producing the infrared?"
Phil answers "Electricity and we have a semiconductor chip that filters out all of the non-far-infrared ray and only gives you the exact frequency that resonates with water. We are the only company that knows how to do it. It took ten years to discover it, in 1997. It uses a semiconductor chip technology to only give you far infrared ray in 7 to 14 microns. What I call loving light."