I bought this and the LED strobes. But this is about this strobe light not the LED's. It worked good. Bought them for my Halloween display. I was using them outside, not made for out doors. They were placed so they didn't get wet. IL. is cold at times and Halloween is no exception. Cold weakens the strobe. It will slow it down even at the highest settings. Now... After it died was indoors a year latter. I changed things around for Halloween and had some things in my windows upstairs with the strobe lights in the rooms. Outside the windows lite up with the strobes. Indoors they work great. Mine died, but I still have the LED ones. LED strobes are not the same as the glass tubes.