AIS Alarm Box





AIS Alarm Box

AIS Alarm Box


Your Audible Alert to Rescue


The AIS alarm box is designed to ensure that the moment any AIS MOB or AIS SART signal is received an 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 mean that integrating the AIS Alarm Box into your AIS receiver and the existing network is straight forward. Combine the AIS Alarm for Man Overboard Emergencies with the ACR AISLink CA2 (Class A) or CB2 (Class B) transceivers to complete your AIS MOB solution.



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The Ocean Signal AIS Alarm for Man Overboard Emergencies can be programmed by the user with up to 30 individual MMSI numbers, multiple tones to identify the source of the AIS signal (AIS Personal Locator Beacon, AIS EPIRB,  AIS MOB or SART) as well as being waterproof to allow for external mounting.


The AIS Alarm Box may be configured by the user to enter the up to 30 MMSI numbers to provide visual and audible alarms by downloading the software at the link below. 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.


The Ocean Signal AIS Alarm has a rugged, waterproof exterior allowing for external mounting, ensuring installation in any desired location for optimum impact.

Additional information

Weight 0.60 lbs
Dimensions 4.5 × 3.5 × 3.75 in
Boat Size

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Boat Type

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Power Supply

10.8 – 15.6 Volts DC

AIS Message Reception



38400Baud, !VDM



38400Baud, !VDM

Alarm Contacts

2 x 8Amps, 250V AC


Temperature Range (Operational)

-15°C – +55°C


1-meter depth


90mm x 72mm x 72mm

Warranty Your Ocean Signal MOB1 is warranted against manufacturing defects in materials and workmanship for 2 years from the date of purchase and per Ocean Signal’s standard warranty policy.

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