The MMR-20 is a wired remote controller engineered to add auxiliary control functionality to MediaMaster source units.Built for marine and off-road applications, its weatherproof (IP67 rated) design places frequently used functions of your MediaMaster source unit in a simple, intuitive design thats easy-to-use. Its large, backlit controls and LED source indicators are easily identifiable, day or night, with brightness settings that can be adjusted using your MediaMaster source unit.A small footprint and simple, one-hole design means the MMR-20 can be installed in even the tightest of spaces. Depending on your system layout, you may add up to three MMR-20 remote controllers to a single MediaMaster source unit. Each MMR-20 can be connected up to 75 ft. (22.8 m) away from its source unit.MediaMaster remote control capabilities include:• Power On/Off• Source Select• Volume Up/Down• Track Up/Down (USB & BT)• Track Fast-Forward/Fast-Rewind (USB)• Favorite Up/Down (Radio)• Play/Pause (USB & BT)• Mute/Unmute (Radio & Aux)Note: Requires MMC Connection Cables (sold separately). Connection cables are available in several lengths to fit your specific application. Y-splitters are also available to connect up to three remotes to a MediaMaster source unit.