Sold by German DIY store OBI, the OBI Energy Tracker is a €15 set of two devices, one of which you essentially stick on top ...
Many thanks for the feedback/input. I tried another actual FTDI USB->serial cable and was successful so it looks like it was my Chinese "ftdi" and USB-> serial components that are causing the issue ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results