The Alpine RUE-M1RF Marine RF Remote Control Kit is compatible with Alpine headunits that offer the steering wheel remote-control input. The RUE-M1RF kits comes supplied with one RF marine remote control and an RF receiver that plugs into the steering wheel remote control jack of your compatible Alpine headunit. In addition to the supplied RF remote control, additional single remotes may be purchased separately, if needed (item# RUE-M1EX). You can program as many as eight remotes to work with the same Alpine headunit. The Alpine marine remote uses RF (radio frequency) technology so you can control your system with the remote from up to 100 feet away. The RUE-M1RF Kit’s remote also has the ability to float and is water resistant. The RUE-M1RF Remote Kit comes with a mounting bracket that the remote can clip into to prevent it from getting tossed overboard in rough waters. You can also string the remote through an optional lanyard and hang it up to prevent loss.