Two of the eight lamps used with the timer failed after approximately 2000 hours. The manufacturer responded very quickly to my letter with a suggestion to replace two defective light bulbs and recommended that these light bulbs should not be used with a timer. I was unaware of the time limit before purchasing and wanted to pass this information along to other buyers. I will take these lightbulbs to another location and look for other lightbulbs that can work with a timer.
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