AIS Alarm


The AIS alarm box is designed to ensure that the moment any AIS MOB or AIS SART signal is received an 87dB audible alarm is sounded ensuring everyone on the vessel is alerted to a possible MOB or a crew in need of rescue. Its simple design, compact nature and use of NMEA 0183 means that integrating the AIS Alarm Box into your AIS receiver and existing network is straight forward.


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SKU: 741S-02037

Categories: AIS

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Panel or bracket mount

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Waterproof (for external mounting)

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Programmable with up to 30 individual device MMSI numbers

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NMEA0183-HS (38400baud) input

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Supplied with power and USB cables

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Detects AIS MOB and AIS SART devices

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Multiple tones to identify source

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Alarms on all received or specific targets

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NMEA through-port for easy integration

The Ocean Signal AIS Alarm is waterproof allowing for external mounting if desired and has the ability to be programmed by the user with up to 30 individual MMSI numbers to provide visual and audible alarms (audible alarms have multiple tones to identify the source of the AIS signal – MOB or SART). An integrated relay option allows for connection to an external alarm or the vessel’s engine kill switch. The relay can be programmed to activate if required.

Pair with the Ocean Signal AIS MOB1 or PLB3 to alert crew inside the cabin of your Man Overboard Alarm.

Configuration of the AIS Alarm can be achieved by downloading the software at the link below:


AIS Alarm Configuration


Whilst every effort has been made to ensure the information on this page is accurate, products and specifications may be changed without notice.


Power Supply

10.8 – 15.6 Volts DC

Audible Alarm

87dB at 1m

AIS Message Reception


38400Baud, !VDM

NMEA-HA Output

38400Baud, !VDM

Alarm Contacts

2 x 8Amps, 250V AC


Temperature Range (Operational)

-15°C – +55°C


1 metre depth


90mm x 72mm x 72mm

Your Ocean Signal product is warranted against manufacturing defects in materials and workmanship for a period of 2 years from the date of purchase and in accordance with the following conditions.


Ocean Signal will at its discretion, repair or replace faulty product free of charge excluding the cost of shipping. Proof of purchase from the original purchaser shall be required in order for a warranty claim to be valid. All claims shall be made in writing to Ocean Signal or an approved service dealer or


Ocean Signal shall not be liable to the buyer under the above warranty:


  • for any repairs or modifications carried out on the product using parts that are not supplied
    or approved by the manufacturer Ocean Signal including batteries and for work carried out
    other than by Ocean Signal or approved service dealers,
  • for any part, material or accessory that is not manufactured by Ocean Signal, the consumer
    will be covered by the guarantee / warranty offered to Ocean Signal by the manufacturer or
    supplier of such a component,
  • for product which has not been fully paid for,
  • for any product supplied by Ocean Signal to a customer under an alternative warranty or
    commercial agreement,
  • for the cost of shipping product to and from the customer.


This warranty does not affect your statutory rights.

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