We bought Chamberlain automatic door opener and my husband attached it to the gates that we had, this was back in Puerto Escondido about ten years ago. He had to reconfigure the opener from a regular garage door opener opening from the bottom and lifting to the top, to opening the iron gates from the middle and sliding to the side inward. He is not a rocket scientist, but I believe we had the first iron gates in Puerto that were automatic. You can get Chamberlain gates at Sams.