I purchased these converters for a 24V to 12V fan conversion I was doing on my 3D printer and they far exceeded my expectations. They are easy to use and work well for my application. My only criticism is that there were no instructions included. Not that you really need instructions to plug them in and use them right away, but they do have a programming procedure if you want to fine-tune your voltage settings. I found this procedure online and it was easy to follow and follow. The quality is what you would expect from an electrical component at this price point.
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