The Fusion MS-NRX50 Marine Volume Controller is a single-knob wired control that adjusts every audio zone of one Fusion stereo at once. It connects to the boat’s NMEA 2000 network through a micro-C port, and pressing the knob plays or pauses the current source.
Installation needs only one 1.5-inch hole, and the unit is front mounted on the dash. It measures 2.35 x 2.35 x 2.04 inches, draws power from the NMEA 2000 network (LEN 2), and is rated IPX7 for the marine environment. Garmin covers it with a 1-year warranty.