Plant joy - yet again

I've had similar products previously in use. Unfortunately, the LED fell after just 2 years of use. Since now this winter I use this light. It gives off a very bright light, the lemons thank it with numerous flowers. Let's see, how long do the lights. Yet it all works well.

EDIT 26/12/2014: It's just like with the previous use of my products well: After the 2nd year use they falter, pronounced sang traps and unsung simply. Total loss. I have to time the operating hours and switching operations is calculated: 2,760 hours of operation and turned 230 times (over mechanical timer). Then came the electric death. LED lights are usually advertised with 25,000 operating hours, very good up to 50,000 operating hours. What that uses but when the ballast is cheaply and does not bring it? The shelf life in relation to the price means devaluation. I had expected better of these lamps far more.

EDIT 22/01/2015: Well, the supplier was very kullant. The faulty lamp has been replaced without any problems. I hope this was an isolated error of Pflnazenlichts and remains. The courteous exchange results, to put at least the supplier back to 5 star. He is his motto "We guarantee you. If you have problems - we work for your future" justice.