FUSION"s MS-WR600 Marine Wired Remote Control extends the capabilities of a 600 Series Stereo or the MS-RA200 Marine Stereo, by enabling local control of the audio in each zone of your vessel. Up to three remotes can be linked to a 600 Series Stereo, providing true system flexibility. Up to two remotes can be linked to an MS-RA200 Stereo. Featuring a rotary encoder and large rubber buttons, the Wired Remote Control is very easy to navigate and control, even on a moving boat.