The main downside is that I had to rework after the first winter already in 3 of 10 lights, because water has penetrated. The problem is not the lights themselves (they are well sealed), but the installation of a typical facade. Between light and facade Doing so is a gap of a few millimeters and the lamp is held by a relatively small base. Regardless of the mounting some sleight of hand and not to big hands required to heineinzubekommen the mostly single-wire cables tidy (I'm not worth a disadvantage because you do not have to do on a regular basis), operates the cable that comes from the facade and in the base of the lamp is as a beautiful gutter. Ie along the cable - if you do not provide you with articulated as "drip nose", water may enter the lamp. The accompanying rubber plug can not completely prevent the in heavy rain.
In summary, you have to watch during the assembly and possibly rework at each lamp when the cable is not optimal but has in the lamp down. This could have been solved better if the base at the top would rest directly on the facade and therefore would create a "roof" for the gap between the facade and the lamp body, which would protect the cables from direct rain. This "roof" could continue to be behind the lamp base and would therefore not visible from the outside.
