These are a vanishing breed since more and more switches simply provide an SFP port and the media conversion status is managed from the switch itself. I'm not sure if any are currently manufactured that do what you want in a stand alone package.
Alloy from Australia make a chassis for housing their converters that has dual power supplies but it's unmanaged. They used to make a managed chassis years ago but I believe that's discontinued.
You would probably find a more supportable solution by putting in a small switch that supports SFPs for the number of ports you connect to send via fiber.
