The connection terminal are more injury. As nice as it is described ... with flexible wires, it is a pure fumbling (1st must first contact spring (be bent between the screw and later connecting wire), otherwise garkeine chance. 2 should not drätchen look ahead from the ferrule, otherwise fumbles you still hours later). Because it is low-voltage, you must actually use 2.5 mm² wires (no idea how this reinbekommt (I had problems already with 0.75 mm²)).
For the power supply connection, I have used rigid wire and connected to 2 terminal strips with the actual supply (although is tedious and the place to quite narrow, but leads to success)
Conclusion:
I will buy again electronic transformers, but no longer from this company. But then again is it Osram