OLAS N2K - NMEA 2000 Person Overboard Alarm and Wireless Engine Kill Switch
SKU:EXPOLASN2K
OLAS N2K is a compact, intelligent man-overboard (MOB) safety interface designed to integrate the award-winning OLAS (Overboard Location Alert System) technology directly with a vessel’s NMEA 2000 network. It acts as the critical bridge between OLAS wireless crew-tracking wearables and onboard navigation electronics, ensuring that if a crew member goes overboard, the vessel receives an immediate, automated alert across its entire digital marine system.
By connecting wearable OLAS transmitters to the boat’s instrumentation, OLAS N2K transforms standalone safety alerts into a fully integrated MOB response - visible on chartplotters, audible onboard, and logged into the vessel’s navigation data within seconds.
Free OLAS Mobile App for enhanced setup, control and monitoring, explore here
App Download: App store / Google Play
In the box:
OLAS N2K, NMEA 2000 connection cable (1m), Stainless steel control switch (0.5m), Engine connection lead (0.5m) + 3 x marine connectors, OLAS T2 Tag + USB charger + silicone strap + neck lanyard, User guide.
ONLY suitable for stop circuits rated 2 Amps or less. Diesel engines may required an additional high current relay.
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Intelligent MOB Integration for Modern Vessels
When paired with OLAS transmitters such as OLAS Tag, OLAS Float-On, or OLAS Extender devices, OLAS N2K continuously monitors crew presence onboard. If a transmitter loses connection for approximately 2 seconds, the unit immediately triggers a man-overboard event.
This event is then broadcast over the NMEA 2000 network, allowing compatible multifunction displays (MFDs) and chartplotters to instantly:
- Display a MOB alarm
- Mark the last known position of the casualty
- Provide immediate situational awareness for recovery
- Alert all connected onboard systems simultaneously
This automation removes the delay of manual alarm activation and significantly improves emergency response times.
Seamless NMEA 2000 Connectivity
Designed specifically for integration into modern marine electronics, OLAS N2K connects directly to the vessel’s NMEA 2000 backbone via a standard drop cable. Once installed, it becomes a fully networked safety node within the onboard system.
Key integration features include:
- Instant MOB alarm transmission across the NMEA 2000 network
- Automatic waypoint creation at the point of disconnection
- Compatibility with major marine electronics brands and MFDs
- Continuous background monitoring with minimal user input
- Simple plug-and-play installation with no complex calibration required
Never Miss a Man Overboard Event
MOB PGN - Man Overboard (PGN 127233) is sent to the NMEA 2000 network, activating any connected MOB device.
AIS Safety Broadcast (PGN 129802) – This internal alert simulates messages from EPIRB or SART devices with AIS VHF support, including the vessel's GPS location, allowing the chart plotter to mark the MOB point.
Basic Technical Specifications
Power supply: 9–16V DC (via NMEA 2000 backbone)
Network interface: NMEA 2000 compliant (standard micro-C connector)
Device type: Certified NMEA 2000 network interface / MOB gateway
Water resistance: Marine-grade sealed enclosure (suitable for onboard installation in exposed environments)
Operating temperature: Designed for typical marine conditions (-10°C to +50°C range)
Power consumption: Low current draw for continuous operation on vessel network
Compatibility: Works with OLAS wearable transmitters and OLAS mobile app ecosystem
Installation: Plug-and-play via NMEA 2000 drop cable (no external power wiring required)
Configuration: Wireless setup via OLAS mobile application
Setup as a kill switch
Setup as an overboard alarm
Scalable system
The OLAS N2K operates on a large scale, capable of tracking up to 25 OLAS transmitters around vessels up to 100ft in length. Whether you have a large motor vessel or a sailing vessel, this device has got you covered. Alternatively, it can be used to track a single tag on a motorboat, ensuring that the engine stops immediately if the helm falls overboard.
Saving lives
The OLAS N2K ensures that power boat and RIB drivers can stop their boat instantly if the skipper or crew get separated, preventing accidents from unmanned, uncontrolled vessels.
Freedom to move
A wireless kill cord allows free movement around the boat without the need to constantly attach and detach a physical kill cord.
Customisable Tag Modes
- Engine stop - it acts as a kill cord, stopping the vessel when the tag is out of range, without triggering MOB alerts.
- MOB alert - it alerts the vessel without cutting the engine.
- Engine stop + MOB alert - this mode triggers crew alerts and cuts off the engine.
Motor Vessel Demonstration
Helm Tag Setup and Demonstration
Engine Immobiliser setup and Demonstration
NMEA 2000 backbone T-connector
OLAS Tag 4 Pack
OLAS T2 Rechargeable crew tracker
Replacement silicone strap for OLAS T2
Charger lead for RAW Pro 2 and OLAS T2
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OLAS N2K - NMEA 2000 Person Overboard Alarm and Wireless Engine Kill Switch
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