The first very good impression regarding. The appearance holds a very precise and scrutiny is not 100% level. Here a compromise between cheap goods from Asia and the material properties need to be addressed. The result is per se not bad, but there are some inequalities, differing gap dimensions and small scratches, but always in the acceptable range. Is it anyway at the latest at an installation height of 3 meters is not much to notice.
The connection is made 3-wire (phase zero protective conductor), the light is flickering - and trouble-free, while pleasant and enjoyable light LED panel of this size tend to shadows cast and spotting on the contact surface, and this error has not yet occurred..
In the first trial run of the transformer was not completely silent, and suffered from a certain (though not unnatural) heat. After the fixed installation is at least the acoustic problem no longer perceptible and also the transformer seems now to have calmed.
Conclusion: "You get, what you paid for" is the motto here. There are better panel, so with more brightness, a high quality design, better quality materials on the market, but also cause an enormous amount of additional costs. Then I would have recourse if I want to incorporate an LED light as an eye catcher in the kitchen cladding for example, or at the office would have several hours of paperwork under the incident light to spend. For normal application areas, however, the handle for cheap (not cheap) alternative is fully justified and is supported with a reasonable price / performance ratio.
Addendum: This product is provided me for testing purposes by the manufacturer. This fact does not affect my rating, which takes an unbiased and objective.