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https://www.ebay.com/itm/232547522143?msclkid=b4008d3a37a313ed3265d6d0c3503d77 there's one. https://chickendoors.com/product/chicken-coop-light-kit/ and the one I think is the best for the price. you do have to get your own 12 volt motorcycle type battery for this one though.