ProMariner Battery Isolator - 2 Alternator - 3 battery - 70 Amp - 02-70-3

The picture for these devices are incorrect. They used one picture for all variants but the item worked as expected (it is a very simple device) and was a direct replacement for the one that was original on my boat (2002 Rinker 342). The item shipped and arrived quickly as promised. I would recommend using this Anchor Express.