I have a solar inveter from a company, aparticular German brand. I wanted to use home assistant with it so I needed rs232 data.. tried the support and they asked me to sign an NDA.

Okay, cool. I did with a fake name, address and everything and they sent a file..

Turns out the file is available online.

Facepalm pro Max.

So my question is, what kind of "IP" is in a data sheet that needs protection ? And this isnt even some secret product but a generic solar product sold by millions.

Rs-232 protocol ? Really ?