Unfortunately, we don't have any suitable extensions in our range at the moment. If I find something, I'll record it and put it in the accessories. The plug is a TS-9.

There are extension cables for these plugs for example at Amazon.
2m 3m 5m 6m, price 7-13 euros

amazon.com/sourcing-map-Stec...

(There is probably no plug for which there are no extension cables ;-)