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. The ACR OLAS mobile application technology detects a break in its ‘virtual tether’ to the ACR OLAS Float-On within 8 seconds of a transmitter going missing. The mobile phone(s) then sounds an alarm and records the latitude and longitude of the incident using the phone or tablet’s GPS.  ACR OLAS then aids the crew with the MOB recovery, clearly directing them to the GPS location where the MOB occurred with clear visual signals and bearing data. ACR OLAS stores all location data and time of incident required by the rescue services.  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.  

Pair the OLAS Float-On with the OLAS Guardian to comply with new USCG Boat Engine Shut Off System regulations for Crew Overboard Devices.




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The ACR OLAS Float-On is a compact, ‘Smart’, crew overboard system.  The OLAS Float-On can easily attach to adults, children, pets and objects such as overboard floatation devices. It is small and portable and can easily be taken from boat to boat to ensure you are always protected.  Activate Solo mode on the app (2G phone signal required) when boating alone and the OLAS app will automatically text message (SMS) your emergency contact with your GPS coordinates in the event you get separated from your boat.

Users can track up to 6 different OLAS Transmitters with 1 phone/tablet and each individual OLAS Transmitter can be tracked by an unlimited number of phones/tablets.  If you want to track more OLAS Transmitters, add the ACR CORE base station or Guardian Engine Shut Off Switch and MOB alarm scaling your system to monitor up to 15 OLAS Transmitters.

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.

Start small or go big, the ACR OLAS is the only solution that can scale to meet your boating needs.

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 Float-On with the OLAS Guardian Engine Cut Off 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
  • LED Flashlight (Low/Med/High)
  • Water Activated Strobe
  • Waterproof (IP67)
  • Buoyant
  • Bluetooth® 4.1 Compatible
  • Battery Life Indicator
  • Fast charge (3 hours)
  • USB Rechargeable

Additional information

Weight 1 lbs
Dimensions 9 × 9 × 5 in
Boat Type

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Boat Size

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ACR Product Number

PN 2982


3.26” (H) x 1.30” (D) / 83mm (H) x 33mm (D)


1.5 Ounces (0.04 kg)




Manual Activation or Automatic activation via proximity sensing or contact with water

Light Output (Lumens)

120 (high power – maximum Lumens), 60 (medium power), 10 (low power)

Runtime (hours)

Flashlight:  1.5 (high power), 4 (medium power), 12 (low power), 20 (strobe),

720 (Standby with water activation mode and OLAS active),

1440 (Standby with water activation mode active)

Charge Time (hours)


Battery (rechargeable)

700mAh Lithium-Ion

Battery Life Indicator

Flashing LED Indicator

MOB System

Track up to 6 different OLAS transmitters with 1 phone/tablet.  OLAS Transmitters can be tracked by an unlimited number of phones/tablets (Bluetooth 4.1 Compatible).

The ALARM sounds within 8 seconds of a Man Overboard situation.  The system records the MOB location using your phone/tablets GPS and directs the boat back to the last known location for a quick and easy recovery.

Compatible with the ACR OLAS Guardian Engine Kill Switch, CORE Base Station, and Extender.

Mobile App

IOS and Android (Free Download)

  • Connect multiple OLAS transmitters to 1 phone or tablet
  • Connect 1 OLAS transmitter to multiple phones / tablets
  • Solo Mode (Text Message Alerts to Emergency Contact with GPS coordinates)
  • App Navigation: Back to point of loss
  • Automatic VHF script for MOB alert

Download the ACR OLAS App on the App store or get it on Google Play: Search ‘ACR OLAS’


For use with vessels up to 40 feet (12 meters).

Extend the coverage range on larger vessels with the ACR OLAS CORE, GUARDIAN and EXTENDER product family.


Upgrade your system with the ACR OLAS Guardian (Engine Kill Switch and MOB Alarm System), ACR OLAS CORE (Base Station with Alarm), and ACR OLAS Extender (extends range of your MOB system from a vessel size of 40 ft up to 80 ft)




Yes (IP67)


Recreational and Commercial Boating

Perfect for crew including adults, children, and pets

Accessories (included)

USB Charging Cable and Lanyard with clip


2 Years





This product is warranted against factory defect in material and workmanship for a period of 2 (two)* years from date of purchase or receipt as a gift. During the warranty period ACR Electronics, Inc. will repair or at its option, replace at no cost to you for labor, materials or return transportation.


For further assistance, please contact our Technical Service Department at :


ACR Electronics, Inc.

5757 Ravenswood Road, Fort Lauderdale, FL 33312-6645


Telephone: +1 (954) 981-3333

Fax: +1 (954) 983-5087

This warranty does not apply if the product has been damaged by accident or misuse, or as a result of service or modification by other than the manufacturer.  The COMPANY MAKES NO REPRESENTATION OR WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, AS TO MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, OR ANY OTHER MATTER WITH RESPECT TO THIS PRODUCT, except as otherwise expressly stated in the previous paragraph. The Company shall not be liable for consequential or special damages. In order to place the warranty in effect, choose a form above and complete it entirely. Or you may fill out the registration card accompanying your product (if applicable) which must be returned to ACR Electronics, Inc. within ten days of purchase.

*Five Years for the following products: EPIRB and PLB.

What measures can I take to ensure optimal performance of the OLAS technology in my ACR product:


1. Do not connect other Bluetooth devices whilst using the OLAS app

2. Ensure the OLAS app is at least 1 meter from other RF transmitting devices

3. Select ‘Always’ for location access in your App settings

4. Allow notifications

5. Only 6 OLAS tags should be ON within range of the OLAS app

6. Avoid carbon, metal or water as this will block the OLAS data

7. Always check connections prior to setting off



What is the minimum phone requirement? 


iPhone 5 onwards / 3rd generation iPad onwards / Android 4.4+ / Bluetooth LE (The Bluetooth chip in some Android devices can vary, always check compatibility after purchase and return if not suitable).


What is the maximum distance? 


75 meters if in an open space. On a yacht we recommend up to 40ft. Always test the range limitations to avoid false alerts.


What is the maximum yacht size? 


We recommend up to 40ft. Always test the range limitations to avoid false alerts.


Does the tag transmit GPS? 


No, the GPS is taken from your mobile device running the OLAS app. It is recorded at the time of alarm, like pressing the MOB button on a chart plotter.


Where does the OLAS app direct back to? 


The app is always directing back to the last known location of the OLAS tag I.e. the point at which the alert sounded.


What is the battery life? 


If turned on and left on up to 4 months. Every time the OLAS tag is switched OFF/ON more power is used. On average around 3 months.


How many phones can use the OLAS app? 


The OLAS app is free of charge and will be updated regularly as and when technical advances are made.


Is the battery user replaceable? 


On the OLAS tag yes, it uses a CR2477. On the OLAS Float-On the battery is rechargeable.


How many OLAS transmitters can be attached to 1 phone? 


Up to 6 is recommended for Andorid devices and 8 for iOS devices to maintain a stable connection. No more than the stated number can be within range of the phone being used.


Can I use a mixture of OLAS tags and OLAS Float-On’s? 


Yes you can use both connected on the same app. They will automatically indicate which is which.


How do you identify different tags? 


When first purchased the tag or Float-on will have a number that will also be represented when it is seen in the app, the name of the tag or Float-On can then be changed. To revert to the number the OLAS app needs to be deleted and reinstalled.


How can I monitor the battery? 


The OLAS tag indicates its battery status in the OLAS app. If the app is running when the level gets below 10% is indicated in the OLAS app.


The OLAS Float-On has battery indication using the traffic light system. When a charge is necessary it will illuminate solid red.


What happens if there are more than 6 OLAS transmitters around 1 device?


The 7th OLAS transmitter may push one of the previous 6 from the list causing a false alert. For this reason, only 6 devices can be used within range of the OLAS app.


What are the optimum OLAS app settings to avoid false alerts?


‘Always’ should be selected in your App settings and notifications should be allowed.


Can I have a different Bluetooth device connected?


No. If using the OLAS app it should not have any connections with external Bluetooth devices.


What is the proper method for testing my OLAS TAG or OLAS FLOAT-ON Transmitter in order to provide the most accurate representation of how the mobile app will communicate with the transmitter in a man overboard (MOB) scenario?

1. Only test 1 OLAS TAG at a time

2. Ideally carry out the test on land

3. Ensure the OLAS TAG you are carrying the test out with is either switched off to cause the alert or fully out of range by submerging in at least 6 inches of open water. Leave the TAG submerged for the entirety of the test. If the TAG is removed from the water or switched back on whilst still in range of the mobile device the TAG will reconnect and OLAS will resume normal tracking. Placing the TAG in a sink or glass of water will not work.

4. You will see TAGS status change from Green reading “Immediate,” “Near,” or “Far” to Red reading “Paused” to “Unknown”

5. After 8 seconds the alarm will sound

6. Accept the alarm and then walk away from the TAG. A searching icon will appear to indicate that you are still within 20 meters of the point of loss and would be within visual contact of the man overboard (MOB)

7. Having walked approximately 20 meters from the TAG, the searching icon will change to an arrow pointing back towards the point of loss. Continue walking for a further 20 meters, this will simulate the vessels onward movement prior to stopping and changing direction to perform a search and rescue 

8. When you reach around 40 meters from the point of loss turn around and follow the arrow

9. Once back within 20 meters the searching icon reappears, this would indicate when you should initiate a search protocol based on the wind and tidal conditions

10. Once back within the 20 meters either switch the TAG back on or remove it from the open water and it will automatically reconnect, cancelling the alarm. When this occurs you know the TAG is back within range





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