The JL Audio MMR-40 is a genuine MediaMaster® full-function, wired NMEA 2000® network controller designed to add an auxiliary control location to a compatible JL Audio marine source unit. Once connected, it mirrors the host unit’s screen and controls on a bright 2.8-inch color LCD—ideal for a second helm, tower, cockpit or cabin station.

• NMEA 2000® Micro-C interface (NMEA 2000 Certified, LEN 4)
• 2.8" TFT LCD display, 320 x 240 resolution
• Marine-ready IP66 weatherproof chassis
• Backlit hard keys with rotary knob control and independent day/night theme & lighting settings
• Protective sun cover included for exposed mounting locations

Compatibility / installation notes

• Not a stand-alone receiver — requires a compatible JL Audio MediaMaster® source unit on the network.
• Common compatible hosts include MM50, MM80-HR, MM100s (incl. BE) and MM105 (verify your exact model and system configuration before ordering).
• Connect via an existing vessel NMEA 2000 backbone (cables/connectors sold separately) or create a simple stand-alone link using a JL Audio MMC-PN2K powered network cable (sold separately).

Specifications

• Operating temperature: -20°C to +70°C (-4°F to +158°F)
• Overall size (H x W): 95 mm x 118 mm (3.74 in x 4.65 in)
• Depth: 14 mm (front) / 50 mm (rear)

What’s included

• MMR-40 network controller
• Mounting gasket, mounting template, mounting screws
• Protective sun cover
• User manual

OEM / reference numbers: JL Audio MMR-40 / 99910; Garmin/JL ref 010-03129-00; UPC 699440999106.

Confirm ratings, specification and fitment before ordering.