NPIX devices availability

[Eyad.Almolki]

Dear Mr. Armin,
thank you for your answer.
I tried to run the container, and I saw the HTML and JS source files you mentioned.
in NodeRed I am getting the error of ''overload/heat'' error whenever I tried to check the GPIO Pins and I found the below:

label: function() {
var na = "";
if (this.out === "15") { na = "dio out0"; }
if (this.out === "16") { na = "dio out1"; }
if (this.out === "22") { na = "dio out2"; }
if (this.out === "37") { na = "dio out3"; }
return this.name||na;
},

is 16 means GPIO 16 or does it mean a HAT pin, the former attachement to RaPi, because in the .js file I found the below
// setup GPIO 27 (HAT pin 13) to input to get module overload/heat status
which got me confused regarding the meaning of the outputs mentioned in the code.