Simrad IS42J Digital Gauge with J1939 Gateway

4.1-inch instrument display with integrated J1939 engine bus gateway.
The IS42J combines two important functions in one device: a full-fledged 4.1-inch instrument display and a J1939 to NMEA 2000 gateway. This allows the device to connect commercial diesel and gas engines with a J1939 bus to your Simrad NMEA 2000 network and visualize engine data directly on the built-in screen.

Suitable for commercial vessels, motor yachts with larger engines, and installations where J1939 engine data needs to be translated to NMEA 2000 for display on MFDs and other instruments.

Why choose the IS42J?

• Dual function: instrument display and J1939 gateway in one device.
• 4.1-inch color screen: clear display with physical buttons.
• J1939 engine bus integration: commercial engines directly in your Simrad network.
• NMEA 2000 output: engine data visible on all compatible displays.
• Compact platform: no separate gateway module needed.

Who is this product for?

The IS42J is designed for owners of commercial engines, heavy diesels, and motor yachts with a J1939 engine bus. Suitable for charter boats, fishing boats, motor yachts, and commercial vessels where engine data needs to be visible on the Simrad network.

What does it offer you?

• Two functions, one device: less hardware, less installation work.
• Direct engine overview: all J1939 data visible on the built-in screen.
• Network-wide visibility: engine data also on MFDs and other instruments.
• Compact installation: one mounting location for display and gateway.
• Future-proof: expandable within the NMEA 2000 network.