Unfortunately, the quality for the price but to be desired. The plastic parts are manufactured with precision, but the rest were saved. The self-tapping screws, which are used in the hinges, can hardly screw without a drop of oil. The hinges themselves go so severe that I had to stick two weights in the lid so that it also joins selbsständig. For the price I expect me each additional spare screw, because for me was broken and I had to stick together slightly with silicone. The engine pushes so strongly against the limit that the arm bounces, thereby closing the limit switch again and briefly puts the engine moving again.
In short: you have to count with three hours of work and may be creative to solve problems. For the price should not be. But the happy faces of the users compensate much again.