Ocean Link J1939 1700 DegreesF Exhaust Temperature Gauge 12/24V. VDO Ocean Link is a J1939 CAN Bus solution designed specifically for marine environments. IP67 water protection, dual lenses and corrosion proof housing ensure extreme service life, while Ocean Links plug-n-play software make set-up simple and fast. Features Diameter 2-1/16 . Diameter Metric 52mm. Connection Integrated Waterproof Connector Harness. Input Type CAN. Mounting Hardware Spin-Lok. Voltage 12V VDO Ocean Link is a J1939 CAN Bus solution designed specifically for marine environments. IP67 water Diameter 2-1/16 . Diameter Metric 52mm Connection Integrated Waterproof Connector Harness. Input Type CAN Mounting Hardware Spin-Lok. Voltage 12V