I do not understand why you have to overdo it with the input data always so. Have these 3 LED lamps as used where small, normal 20W bulbs were with me on the ceiling. Ok, the light is pleasant, but the light intensity is never and never 20 watts similar, perhaps more than 10 watts or even less ... The pins could also be a bit longer. Could she so with reflector do not install. Had the reflector expand so that I could reinkriegen in the sockets. The capacitors and all the electronics behind the LED circuit board, etc. are so great that they at me as shown in the depression of the reflector as in the picture, not purely fit. In operation I hear a slight hum coming from the S LED, no Ahnugn whether it is the capacitor or anything else on the board. In the table lamp next to my computer but they are just perfect! Otherwise, of course cool thing this LED. The idea is great, but needs to be strengthened considerably. That's why 3 stars!