Full-function, NMEA 2000® network wired remote controller with full color LCD display The MMR-40 is a NMEA 2000® Network Controller engineered to add full-function, auxiliary control to MediaMaster® source units. Outfitted with a NMEA 2000® Micro-C connector, the MMR-40 connects to a host MediaMaster® source unit in two ways:  Direct interface with a vessel's NMEA 2000® network using applicable NMEA 2000® cables and connectors (not included) Direct connection of one MMR-40 with one host MediaMaster® source unit using MMC-PN2K powered network cables (sold separately) to simulate an isolated, stand-alone NMEA 2000® network Once connected, the MMR-40 automatically recognizes the host MediaMaster® source unit and will then mirror all host source unit controls and screen info onto the MMR-40's full-color, 2.8-inch LCD display, resulting in a complete MediaMaster® user experience.  The MMR-40 is equipped with independent display theme and lighting controls for maximum mounting location flexibility, regardless of the settings on the host source unit. Engineered for real-world marine (and many outdoor) applications, its weatherproof (IP66 rated) chassis is built to withstand the harshest environments.  The MMR-40 includes the following features:  NMEA 2000® Certified (LEN 4) Easy-to-read, high-brightness, 2.8-inch full-color LCD display with large backlit controls Independent day/night display themes and lighting controls IP66 rated for real marine duty Protective Sun Cover included Note: The MMR-40 is not a stand-alone receiver and does not function without a connected MediaMaster® source unit. All remote control functionality of the MMR-40 is solely derived from the host source unit. Functionality of the MMR-40 requires connection to a NMEA 2000® network or use of MMC-PN2K powered network cables (sold separately). Need additional information on making MediaMaster® connections? View the Help Center Article. Operating Temperature Range -4 F to +158 F (-20 C to +70 C) Display Size / Type 2.8-inch / TFT LCD backlighted Display Resolution 320 x 240 Height (H) 3.74 in / 95 mm Width (W) 4.65 in / 118 mm Depth (D1) 0.55 in / 14 mm Depth (D2) 1.96 in / 50 mm Mounting Hole Height (A) 3.12 in / 80 mm Mounting Hole Width (B) 3.74 in / 95 mm Net Weight Download  MMR-40 Product Manual  Download Mounting Instructions/Template: MMR-40  USA Limited Warranty:  Two (2) years from the original date of purchase Warranty Details  Find the answers to many common questions: Â