It is the second lamp of this kind should replace their tube murderous predecessor, there were problems starting. I have the lamp rebuilt, socket and switch to the other side is, according to instructions provided as well. It should be noticed that in 2 of the 3 cable glands, the thread had already overexcited, without "soft" violence there was nothing to solve, then had to be replaced just as well. When connecting devices to one of the outlets there were short-term contact with the protective conductor, the end for each FI. This apparently was due to the clamping of the cables, structurally not adequately separated. By rewiring also could be resolved. Something annoying also that the holes were laid for mounting on the wall. Practical lamp, but poor workmanship.