The Ocean Signal rescueME MOB1 is a compact personal AIS man overboard beacon designed for installation inside most inflatable lifejackets. When properly installed, inflation of the lifejacket automatically deploys the antenna and activates the beacon, allowing the first emergency transmission to begin within approximately 15 seconds.

Once activated, the MOB1 uses its integrated GPS receiver to determine the wearer’s position and broadcasts an AIS man overboard alert to compatible AIS receivers and AIS-enabled chartplotters aboard the parent vessel and other nearby vessels. This allows the crew to quickly identify the emergency, view the person’s location, and track their position during recovery efforts.

AIS and DSC Man Overboard Alerting

The MOB1 transmits on both international AIS frequencies using a 1-watt AIS signal. The alert appears on compatible marine electronics as an AIS man overboard target, providing position information that can help guide the vessel back to the person in the water.

An integrated Digital Selective Calling transmitter can also send an alert to a compatible DSC-equipped marine VHF radio. The vessel’s MMSI number can be programmed into the MOB1, allowing the beacon to trigger an audible DSC alarm aboard the parent vessel. DSC functionality may vary depending on the country, radio model, and age of the installed VHF equipment.

A high-intensity flashing strobe light improves visibility during nighttime recoveries, poor weather, and reduced visibility conditions. The beacon can provide an effective range of up to approximately 5 miles, although actual performance will depend on antenna height, sea conditions, surrounding vessels, and other environmental factors.

Designed for Inflatable Lifejackets

The MOB1 is approximately 30% smaller than many competing AIS man overboard devices and is designed to fit inside even compact inflatable lifejackets. The included mounting system secures the beacon near the lifejacket’s oral inflation tube.

When the lifejacket inflates, the activation tape releases the antenna and automatically switches on the beacon. The MOB1 can also be manually activated when necessary. Always consult the lifejacket manufacturer before installation and follow the Ocean Signal mounting instructions carefully. Proper placement and arming are important for reliable automatic deployment without interfering with lifejacket inflation.

Compact, Durable and Ready for Emergency Use

The Ocean Signal MOB1 measures approximately 134 x 38 x 27 mm and weighs only 92 grams. It is waterproof to a depth of 10 meters and is designed to operate in temperatures from -20°C to +55°C.

The integrated battery provides more than 24 hours of typical operating life and has a seven-year storage life. At extreme temperatures of -20°C, the beacon provides more than 12 hours of operating life.

The MOB1 transmits AIS position reports on 161.975 MHz and 162.025 MHz and transmits DSC alerts on 156.525 MHz, VHF Channel 70. The beacon complies with RTCM SC11901 and EN 303 098-1 standards.

MMSI Programming and Equipment Compatibility

Each MOB1 is factory programmed with a permanent AIS man overboard identity beginning with 972. This AIS identity is unique to the beacon and cannot be changed.

The vessel’s standard nine-digit MMSI number can be programmed separately into the MOB1 for DSC alerting. This vessel MMSI can be updated if the beacon is later transferred to another boat.

Most modern AIS receivers, AIS-enabled multifunction displays, and DSC-equipped marine VHF radios support the transmissions used by the MOB1. Compatibility should be confirmed with the electronics manufacturer, particularly when the vessel has an older chartplotter or DSC radio.

Important Safety and Regulatory Information

The MOB1 is a short-range AIS man overboard locating device and is not an EPIRB or Personal Locator Beacon. It does not transmit through the Cospas-Sarsat satellite rescue network and should not be considered a replacement for an EPIRB or PLB when worldwide satellite distress alerting is required.

DSC functions and AIS man overboard regulations vary by country. Some European countries have implemented newer AIS Class M requirements that may restrict use of the MOB1. Customers planning to use the beacon outside the United States should verify current regulations for their country and operating area before purchase.

Product Information

Manufacturer: Ocean Signal
Model: rescueME MOB1
Manufacturer Part Number: 740S-01551
AIS Transmit Power: 1 watt EIRP
DSC Transmit Power: 0.5 watt EIRP
Battery Storage Life: 7 years
Typical Operating Life: More than 24 hours
Waterproof Rating: 10 meters
Weight: 92 grams
Country of Manufacture: United Kingdom

Professionally engineered and tested to ensure it can withstand even the harshest elements, this buoyant Personal Locator Beacon requires no subscription for use. Designed for a wide variety of environments, the ResQLink’s satellite precision and military durability puts rescue in the palm of your hands.

Small but resilient, the ResQLink 400 has been professionally engineered and tested to ensure it can withstand even the harshest elements. This buoyant Personal Locator Beacon requires no subscription for use and can be utilized to enhance your safety in a wide variety of environments. Whether on land, at sea, or in the air, trust that the ResQLink’s satellite precision and military durability, puts rescue in the palm of your hands.

With three levels of integrated signal technology – GPS positioning, a powerful 406 MHz signal, and 121.5 MHz homing capability – the ResQLink 400 quickly and accurately relays your position to a worldwide network of search and rescue satellites. Additionally, a built-in strobe and infrared strobe facilitate nighttime, or other low visibility, rescues.

Wherever your adventure takes you, whether it’s a trip to the highest mountain peaks, the most undiscovered terrain, or the vastest of oceans, rest assured that the ResQLink 400 always activates easily. Simply deploy the antenna, press the on button, and the beacon will do the rest for you by effortlessly guiding rescuers to within 100 meters or less of your position.

Due to innovative design elements, multifunction clips can be used in conjunction with the beacon, providing numerous wearability options that address a variety of usage applications. The increased ease of incorporating the ResQLink 400 on your person, or with your gear, just made all your adventures not just safer, but more convenient too.

As a leader in life-saving products for both professional and recreational use, ACR provides unparalleled safety and peace of mind with the ResQLink 400 Personal Locator Beacon.

Features & Benefits:

• GPS/Galileo GNSS
• Built-In Buoyancy
• Strobe and Infrared Strobe
• Global Coverage
• MEOSAR Compatible
• Small and lightweight
• 5 year battery life
• 24+ hours Operational Life**
• Multifunction Clip System Included
• No Subscription Required

Small but resilient, the ResQLink View has been professionally engineered and tested to ensure it can withstand even the harshest elements. This buoyant Personal Locator Beacon requires no subscription for use and includes a digital display providing live status and GPS coordinates. Whether on land, at sea, or in the air, trust that the ResQLink’s satellite precision and military durability, puts rescue in the palm of your hands.

With three levels of integrated signal technology – GPS positioning, a powerful 406 MHz signal, and 121.5 MHz homing capability – the ResQLink View quickly and accurately relays your position to a worldwide network of search and rescue satellites. Additionally, a built-in strobe and infrared strobe facilitate nighttime, or other low visibility, rescues.

Wherever your adventure takes you, whether it’s a trip to the highest mountain peaks, the most undiscovered terrain, or the vastest of oceans, rest assured that the ResQLink View always activates easily. Simply deploy the antenna, press the on button, and the beacon will do the rest for you by effortlessly guiding rescuers to within 100 meters or less of your position. Enjoy added piece of mind using the integrated digital display to view live beacon status and GPS coordinates throughout the rescue process.

Due to innovative design elements, multifunction clips can be used in conjunction with the beacon, providing numerous wearability options that address a variety of usage applications. The increased ease of incorporating the ResQLink View on your person, or with your gear, just made all your adventures not just safer, but more convenient too.

As a leader in life-saving products for both professional and recreational use, ACR provides unparalleled safety and peace of mind with the ResQLink View Personal Locator Beacon.

Features & Benefits:

• Digital OLED Display
• GPS | Galileo GNSS
• Built-In Buoyancy
• Strobe and Infrared Strobe
• Global Coverage
• MEOSAR Compatible
• Small and lightweight
• 5 year battery life
• 28 hours Operational Life**
• Multifunction Clip System Included
• No Subscription Required

Compact, buoyant and subscription-free, the ACR ResQLink 410 RLS puts access to the global Cospas-Sarsat search-and-rescue satellite network in the palm of your hand. Designed for boaters, anglers, paddlers, hikers, pilots and backcountry travelers, this manually activated Personal Locator Beacon provides an essential emergency signaling option when cellular or conventional radio coverage is unavailable.

The ResQLink 410 RLS transmits a powerful digital distress signal on 406 MHz while its integrated GPS and Galileo GNSS receiver supplies rescuers with your position. A secondary 121.5 MHz homing signal helps search-and-rescue personnel locate the beacon as they approach the area. High-visibility LED and infrared strobes provide additional signaling support during nighttime operations and other low-visibility conditions.

Return Link Service Confirmation

Return Link Service, or RLS, provides an added level of reassurance during an emergency. After the beacon's distress transmission and location have been received through the satellite system, a flashing blue indicator confirms that the message was received and the beacon's position was detected.

RLS is a confirmation feature rather than a two-way messaging service. Standard 406 MHz PLB functionality is available worldwide, while Return Link Service availability may depend on the country or region in which the beacon is registered and used.

Simple Manual Activation

In an emergency, deploy the antenna, position the beacon with a clear view of the sky and press the activation button. The ResQLink 410 RLS is buoyant and waterproof, but it must remain above the surface of the water with its antenna pointing upward to transmit properly.

The included multifunction clip system provides several attachment options, making it easy to carry the beacon on your person, personal flotation device, backpack or other safety equipment.

Key Features

• No monthly or annual subscription required
• Return Link Service confirmation with blue indicator light
• 406 MHz Cospas-Sarsat distress transmission
• 121.5 MHz local homing signal
• Integrated GPS and Galileo GNSS positioning
• MEOSAR-compatible technology
• Built-in buoyancy
• High-visibility LED strobe
• Infrared strobe for low-light search operations
• Worldwide standard PLB coverage
• Compact and lightweight construction
• 24+ hours of operational battery life
• Five-year battery replacement interval
• Multifunction clip system included

Technical Specifications

• Manufacturer: ACR Electronics
• Product Name: ResQLink™ 410 RLS
• Part Number: 2931 – USA Programmed
• Model Number: PLB-410
• Activation: Manual
• Satellite Distress Frequency: 406 MHz
• Homing Frequency: 121.5 MHz
• GNSS Receiver: Multi-constellation GPS and Galileo receiver
• Dimensions: 4.52" L x 2.03" W x 1.49" D (11.48 x 5.16 x 3.78 cm)
• Weight: 0.33 lb. (148 g)
• Battery: Non-hazardous lithium battery pack included
• Battery Replacement: After five years or after emergency use, whichever occurs first
• Operational Life: 24+ hours
• Buoyancy: Built-in buoyancy
• Waterproof Rating: 16.4 ft. (5 m) for 1 hour; 33 ft. (10 m) for 10 minutes
• Operating Temperature: -4°F to +131°F (-20°C to +55°C)
• Storage Temperature: -22°F to +158°F (-30°C to +70°C)
• Warranty: 5 years

What's Included

• ACR ResQLink™ 410 RLS Personal Locator Beacon
• Multifunction clip system
• Instruction manual

Beacon Registration

This listing is for the USA-programmed ACR 2931. U.S.-coded 406 MHz Personal Locator Beacons must be registered with NOAA after purchase. Registration is free and supplies search-and-rescue authorities with the owner, emergency contact and trip information associated with the beacon.

Register or update a U.S.-coded 406 MHz beacon with NOAA

The ResQLink 410 RLS is sold individually. This device is intended only for grave and imminent emergency situations. Deliberate misuse of a distress beacon may result in penalties.

Important Return Policy: This product may not be returned to the original point of purchase. Please contact ACR Electronics directly regarding warranty claims, technical problems or product concerns.

The Ocean Signal rescueME PLB1 is an exceptionally compact Personal Locator Beacon designed to connect its user directly with worldwide search and rescue services during a grave and imminent emergency. Suitable for marine, aviation, hiking, climbing, hunting, remote work, and other outdoor activities, the PLB1 provides dependable satellite distress alerting anywhere within the coverage of the international Cospas-Sarsat system.

Once activated, the rescueME PLB1 transmits its unique beacon identification and GPS-derived position through the dedicated 406 MHz search and rescue satellite network. The alert is routed to the appropriate Rescue Coordination Center so that emergency services can identify the registered owner, determine the beacon’s location, and begin coordinating a response. Cospas-Sarsat service is government-supported and does not require a subscription or ongoing service plan.

406 MHz Distress Alerting with Integrated GPS

The rescueME PLB1 transmits a powerful 5-watt distress signal on 406.040 MHz. Its integrated 66-channel GPS receiver determines the user’s position and includes that location with the emergency transmission, helping search and rescue authorities reduce the area they need to search.

The satellite network can determine an approximate beacon location from the 406 MHz transmission alone. Once the PLB1 obtains a reliable GPS position, location accuracy is typically within approximately 100 meters. The beacon continues transmitting its distress identification and updated position throughout the emergency.

121.5 MHz Homing Signal and LED Strobe

In addition to its primary satellite distress transmission, the PLB1 broadcasts a 121.5 MHz homing signal. Search and rescue aircraft, vessels, and ground teams equipped with compatible direction-finding equipment can use this signal during the final stages of a rescue to locate the beacon more precisely.

An integrated high-intensity white LED strobe produces approximately one candela of light and flashes between 20 and 30 times per minute. The strobe provides an additional visual locating aid during nighttime operations and other low-visibility conditions.

Compact One-Handed Operation

The rescueME PLB1 is approximately 30% smaller by volume than many conventional Personal Locator Beacons and weighs only 116 grams. Its compact design allows it to be carried on a belt, attached to protective clothing, mounted to compatible safety equipment, or stored in an emergency kit without taking up significant space.

A spring-loaded protective flap covers the activation controls to reduce the risk of accidental operation. During an emergency, the retractable antenna is pulled fully from the beacon using the black tab. The protective flap is then lifted and the activation button is pressed for one second. The PLB1 can be activated and operated with one hand when necessary.

The included mounting cradle uses a flexible strap to secure the PLB1 to a belt, clothing, or other suitable equipment. When installing the beacon directly on a lifejacket or another personal flotation device, always follow the lifejacket manufacturer’s instructions and secure the beacon to the wearer with its lanyard.

Rugged Construction and Long-Life Battery

The PLB1 is waterproof to a depth of 15 meters and is designed to operate in temperatures from -20°C to +55°C. Its lithium manganese dioxide battery provides more than 24 hours of emergency operation at -20°C and has a seven-year replacement interval under normal storage and testing conditions.

Routine beacon and GPS self-tests allow the owner to check the PLB1 without transmitting an emergency distress alert. Ocean Signal recommends performing the standard beacon test monthly. Testing should always be completed according to the instructions in the owner’s manual because every test uses a small amount of the beacon’s battery capacity.

Important Flotation and Operating Information

The rescueME PLB1 does not float unless it is fitted with the optional Ocean Signal flotation pouch. The flotation pouch provides buoyancy and can help recover the beacon if it is dropped into the water, but the PLB1 is not designed to transmit while floating inside the pouch.

When activated over water, the beacon should be securely tethered to the user or life raft and held clear of the water. The PLB1 should be positioned with its antenna vertical and the area marked for the GPS antenna kept clear of obstructions. The beacon should not be submerged or allowed to float freely while transmitting.

The rescueME PLB1 is a manually activated Personal Locator Beacon. It does not automatically activate when a lifejacket inflates or when it enters the water. Users seeking automatic lifejacket activation and local AIS man overboard alerting should consider an appropriate Ocean Signal AIS MOB beacon or the rescueME PLB3.

Product Information

Manufacturer: Ocean Signal
Model: rescueME PLB1
Manufacturer Part Number: 730S-01261
Beacon Type: Personal Locator Beacon
Activation: Manual
Satellite Network: Cospas-Sarsat
Primary Distress Frequency: 406.040 MHz
406 MHz Transmit Power: 5 watts nominal
Homing Frequency: 121.5 MHz
Homing Transmit Power: 25 to 100 mW
GPS Receiver: Integrated 66-channel GPS
Strobe: High-intensity white LED, approximately one candela
Operating Life: More than 24 hours at -20°C
Battery Replacement Interval: 7 years
Battery Chemistry: Lithium manganese dioxide
Operating Temperature: -20°C to +55°C
Storage Temperature: -30°C to +70°C
Waterproof Rating: 15 meters
Dimensions: Approximately 76 x 52 x 32 mm
Weight: 116 grams
Flotation: Optional flotation pouch required
Country of Manufacture: United Kingdom
Warranty: Two years, extendable by an additional three years through Ocean Signal product registration

Beacon Registration

Every 406 MHz Personal Locator Beacon must be registered with the appropriate national beacon registration authority before being placed into service. Registration connects the beacon’s unique 15-digit identification number with the owner, emergency contacts, and other information that may assist search and rescue authorities.

Registration is free for U.S.-coded Personal Locator Beacons through NOAA. The registration should be reviewed regularly and updated whenever the owner’s contact information, emergency contacts, or intended use changes.

Register or Update a U.S. 406 MHz Beacon with NOAA

Battery Replacement and Emergency Use

The PLB1 battery is not user replaceable. Battery service must be completed by an authorized service provider before the expiration date marked on the beacon. The battery must also be replaced after an emergency activation, following significant accidental use, or when the self-test indicator shows that the battery has been used.

The rescueME PLB1 should only be activated during a situation of grave and imminent danger. If the beacon is accidentally activated, switch it off and contact the appropriate rescue authority as soon as possible with the beacon’s 15-digit identification number, the time of activation, and the user’s current location.

Product Manual

Download the Ocean Signal rescueME PLB1 User Manual