Raymarine MCU-200 Master Cont.Unit With GSMThe MCU-200 adds GSM capabilities to the system. A dedicated SIM card slot allows the MCU-200 to connect to a mobile GSM network and communicate with a smartphone via text messaging. MCU-200 Master Control Unit (MCU) or other MCU is required if more than 3 CCM s are installed on the system.
The Master Control Unit is the central processor that drives the system, providing computing power, intelligence and decision making. The MCU is a NMEA2000 device that talks to other system components via the NMEA2000 network. The MCU stores and executes configuration files for Installation. | 
