ACR OLAS Man Overboard System | ACR Electronics


Overboard Location Alert System

The ACR OLAS product line includes the ACR OLAS Tag and ACR OLAS Float-On MOB systems, worn by the user to connect with the ACR OLAS app on their smart phone or tablet, or can be scaled to work with the OLAS CORE base station, OLAS Guardian Engine Kill Switch and Alarm, or OLAS EXTENDER. ACR OLAS technology works by detecting a break in the ‘vitual tether’ from your mobile device, Core, Guardian, or Extender receivers to the ACR OLAS MOB system within 8 seconds of someone falling overboard. The phone stores the GPS location, sounds a loud alarm, alerting crew to the man overboard incident before the OLAS app then aids the recovery with directions to the stored GPS location.



ACR OLAS technology provides an affordable man overboard alarm system for cruisers and boaters and is available through the ACR OLAS Tag and ACR OLAS Float-On, both of which pair with your mobile device and connect to the free iOS and Android ACR OLAS app. Compact and versatile for attachment on your wrist or lifejacket, the Tag’s universal silicone strap can be used by crew, children and animals and is ideal for day time cruising or short-handed daytime sailing for constant reassurance onboard. The OLAS Float-On is a water-activated USB rechargeable torch, which is easy to attach to a life jacket and ideal for boaters sailing during the day and into the night.

Once the ‘virtual tether’ between your OLAS system and device is broken, the OLAS mobile app will emit an alarm and light signal, record the time and GPS location of the incident, illustrate the direction and course to return to the alert GPS location and advise on VHF Mayday Call using pre-set vessel information. Up to 6 Tags or Float-Ons can be connected to one phone or tablet and one OLAS device can be connected to unlimited phones or tables.



The ACR OLAS system is the perfect safety solution for all sail and motorboat owners, their families, pets and crew while out on the water, providing everyone with peace of mind.


ACR OLAS MOBILE APP (Download Free on App Store or Google Play)

  • Connect multiple OLAS transmitters to 1 phone or tablets
  • Connect 1 OLAS transmitter to multiple phones or tablets
  • Solo Mode sends text message alerts to emergency contacts with GPS coordinates (2G Cell Service Required)
  • App Navigation back to the initial MOB location
  • Automatic VHF script for MOB alerts



Add more versatility to your boat by growing the OLAS system as your boat, family, crew increases.  Connect up to 6 Tag or OLAS Float-On’s to your mobile device, or added onto your OLAS system with our new line up of base stations and repeaters to connect up to 15 devices.


ACR OLAS CORE – 5V USB Portable Base Station Alarm

  • Track up to 15 OLAS Devices
  • Portable / Low Power (5V USB)
  • 85 db Alarm & 55W Red Emergency Light
  • ACR OLAS App Integration


ACR OLAS GUARDIAN – 12V Engine Kill Switch and Alarm

  • Wireless kill switch stops engine within 2 seconds of becoming disconnected
  • 85 db Alarm & Red Emergency Light
    • Use Mobile App to Configure Alarm Settings (Engine Kill Switch and Alarms or Alarms Only)
  • Track up to 15 OLAS Devices
  • Auto Connect to all OLAS Transmitters
  • Auto-Override after 5 Seconds
  • ACR OLAS App Integration
  • Easy Installation


ACR OLAS EXTENDER – Rechargeable Repeater for CORE and GUARDIAN

  • Track up to 15 OLAS Devices
  • Extend Coverage Range an additional 30 Feet
  • Compatible with OLAS CORE and OLAS GUARDIAN
  • ACR OLAS App Integration





The ACR OLAS Tag is a compact, ‘Smart’, man overboard system. It can easily attach to adults, children, pets and objects such as overboard floatation devices or Personal Locator Beacons. It is small and portable and can easily be taken from boat to boat to ensure you are always protected.

Each tag is supplied with a universal silicone wrist strap with stainless steel buckle and a pre-installed CR2477 Battery (user replaceable).


The range of the ACR OLAS transmitters allows for coverage on vessels up to 40 ft in length. However, the transmitter is part of a larger scalable ecosystem of ACR OLAS products (transmitters and receivers) that offer additional safety features and can be combined to track large crews on larger vessels. You can even ditch your phone and utilize your ACR OLAS Tag with the OLAS Guardian Engine Kill Switch or OLAS Core Base Station as part of a more permanent solution.


ACR OLAS is a must have addition to your safety toolkit. It provides a simple yet cost effective safety solution for everyone on board including adults, children and even pets.


Key Features:

  • ACR OLAS Free Mobile App Integration
  • Versatile Attachment Solution (Wrist worn, life jacket, dog collar, attach to Personal Locator Beacon)
  • Waterproof (IP 67)
  • Bluetooth 4.1 Compatible
  • Low Battery Indicator Light
  • 3,500 Hours Per Battery When Armed
  • User Replaceable Battery (CR2477)




Wearable Crew Tracker with LED Flashlight and Water Activated Strobe


The ACR OLAS Float-On is a buoyant Wearable Crew Tracker that integrates OLAS (Overboard Location Alert System) technology with an LED flashlight and water activated strobe. As an extra safety feature, in addition to the audible alarm on the mobile device, the strobe light automatically activates once the transmitter’s integrated water sensors detect six seconds of water connection. The high-power strobe flashes once every second for up to 20 hours, is visible up to 3 nautical miles away, and provides an important additional safety tool for low light rescues.

Featuring a robust yet compact and convenient design, the ACR OLAS Float-On includes a feature button that is easily located in the dark. The LED light is effective as a flashlight used to see objects in the distance whilst also emitting side light to ensure complete all-round visibility when acting as a position indicating light or strobe. The ACR OLAS Float-On can be easily stowed on any existing safety gear or in a lifejacket pocket.


Key Features:

  • ACR OLAS Free Mobile App Integration
  • LED Flashlight (Low/Med/High)
  • Water Activated Strobe
  • Waterproof (IP67)
  • Buoyant
  • Bluetooth 4.1 Compatible
  • Battery Life Indicator
  • Fast charge (3 hours)
  • USB Rechargeable



ACR Electronics, Inc. is the leading development center for emergency beacons that are designed with one purpose: to save lives. Through our combined technology expertise in the marine, aviation, outdoor and military markets, we design and manufacture cutting edge rescue beacons and survival gear for boaters, pilots, hunters, hikers, climbers, cyclists, and combat troops, not to mention many of the leading boat builders and aircraft manufacturers in the industry.


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