Thank you for this detailed response and the unit sounds safe.
I got a quick phone call response from Thailand but no response from Germany.
Maybe some of us Falangs get a bit carried away with safety, but it is hammered into us when we did our tech training.
When I started on my 5 year Telecommunications traineeship in 1963, some trainees were cutting their hand, so eventually they banned the use of knifes. Also later on a couple of trainees were electrocuted working on live switchboards, so they banned us working on power. And so it goes. ????