This is the newer version of the remote panel. Its color is Grey and it is functionally identical to the original model colored black. Its also a bit cheaper. This panel is intended both for Multi's and Quattro's. It allows PowerControl and PowerAssist current limit setting for two AC sources: a generator and shore-side current for example.The GX version has a bevel to the front face which mirrors the bevel on the face of the Color Control GX but is otherwise identical to the standard version