J2K100 - Intermediate System (One Engine)

MSRP $1,971.90

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  • DSM250 Screenshots

Most modern electronic engines have a digital interface called J1939. Maretron’s J2K100 is a gateway that converts the J1939 protocol to marine industry standard digital protocol called NMEA 2000. The J2K100 converts many engine parameters including RPM, boost and oil pressure, oil and coolant temperature, voltage, fuel rate, engine hours and more depending on the particular engine. The GPS antenna/receiver (GPS200) provides the vessel’s speed that allows the display to compute and show the fuel economy (gallons/hour or liters/kilometer).

The following table shows the products included within this example system plus a list of the information or data available for display.

Product Description Available Data List
DSM250 Display 5.7” Display shows data in this list, monitors the data and sounds an internal buzzer if there is a problem
J2K100 Engine Monitor Monitors RPM, boost and oil pressure, oil and coolant temp, voltage, fuel rate, hours, and more depending on the particular engine
GPS200 Cabin Top GPS Position, speed over ground, course over ground, time, date, magnetic variation and more

The following screenshots (click to enlarge) are examples of how the engine status will be displayed on the DSM250.

COG Course Up Rose

Engine Battery

Engine Coolant and Oil

Engine Fuel Economy

Engine Fuel Rate

Engine Hours

Engine Pressures and Load

Engine Tachometer Gauge

GPS Status

Lat Lon

Local Time and Date


SOG and COG Digital

SOG Gauge

UTC Time and Date