Germany seems to have switched over to DCC years ago but these dc models are still shipped with the starter kits or around £21 street price new.
The case is solid and feels like German plastic and the controller appears to be made by Steger GmbH.
The 4 clips can be released with a flat blade screwdriver to reveal...well mostly air. It appears a very simple design.
It does hold modern and vintage locos like my Wrenns at a steady speed unlike variable resister types like the