Have them all and am satisfied with the lighting with warm light in the corresponding power. They are good in the outdoor area can be used as IP 65 design. An interconnection takes place in a separate box or directly in Gehäse this illuminant. The housing bracket provides ample opportunities to fix the lighting in beams, ceilings and walls. However, I can so far do not have any information on the average live time of 50,000 hours, sorry!
My 30 replaces a 250 halogen lamps as the same type. The 20 illuminated more than adequate a dartboard and 10 serve in 2 meters distance in about 2.3 meters height Wegstrahler for a garden entrance. Price / performance in any case good, strong buy recommendation!