Simrad NMEA 2000 Remote MOB Button, Micro-C, IP67, 9-18V

Overview

The Simrad 000-15940-001 is an NMEA 2000 remote push button that creates a Crew Overboard (MOB) event on the network, letting connected displays and instruments drop a waypoint and navigate back to the position. It is powered directly from the NMEA 2000 backbone (12 V DC supply, 9 V DC to 18 V DC operating) and draws 1 LEN (0.39 W, 28 mA at 13.8 V).

A short press creates a Crew Overboard waypoint and the LED ring around the button flashes to show the event is active. Press and hold for three seconds to cancel the last event, and the LED stops flashing. The housing is rated IP67 for spray and washdowns, with an operating temperature range of -15°C to 55°C, and it includes reverse polarity protection.

Key features

• Triggers a Crew Overboard notification on the NMEA 2000 network (PGN 127233 TX).
• Network powered through a Micro-C connection, no separate power wiring required at the mounting location.
• Draws 1 LEN (0.39 W, 28 mA at 13.8 V) to help with NMEA 2000 load planning.
• IP67 water ingress rating for exposed mounting areas that see spray and routine washdowns.
• LED ring status indication with a press-and-hold cancel function (3 seconds) for the last event.
• 0.6 m (1.97 ft) attached NMEA 2000 Micro-C drop lead for reaching a nearby tee.
• Panel mounting with Ø 22.5 mm (0.88 in) cutout and Ø 52.0 mm (2.04 in) face.

What’s included

• NMEA 2000 remote button with Micro-C connector (male).
• NMEA 2000 Micro-C T-connector.

Installation and setup

Mount the button where it can be reached quickly, then run the attached Micro-C drop lead to a tee on your NMEA 2000 backbone. The button mounts through a Ø 22.5 mm (0.88 in) hole, with a Ø 52.0 mm (2.04 in) front face that covers the cutout. Keep the backbone properly terminated at both ends and powered per your network layout so the button and the rest of the devices stay online.

Electrical and system integration

This is a network control, not a hardwired 12 V switch. It sends a Crew Overboard message (PGN 127233) on the backbone, and the rest of the response depends on how your displays and instruments handle MOB events. For the clearest on-screen guidance back to the position, the network should have a working GPS position source and a compatible display or instrument that can show and navigate to the created waypoint.

Use on board

This button fits boats where the main display is not always within arm’s reach in an emergency, such as sailboats with a cockpit helming position, powerboats with a flybridge, or fishing boats where crew spend time at the cockpit and transom. It is also a practical add-on for boats that want a dedicated MOB trigger separate from touchscreen menus, especially when hands are wet or the boat is moving around.

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