The ACR OLAS EXTENDER is a small, portable, wireless range extender that provides the flexibility of scaling your OLAS GUARDIAN Engine Kill Switch and OLAS CORE MOB Alarm Systems for use on larger vessels. While the OLAS Tag and OLAS Float-On transmitters and the OLAS CORE, OLAS GUARDIAN, and OLAS Mobile App receivers allow for coverage on vessels between 40 ft. and 50 ft., the OLAS EXTENDER allows for coverage on vessels up to 80 ft when used with the OLAS GUARDIAN or OLAS CORE. 





CODE: SHIPFREE20 Free Ground Shipping on orders above U$30. Excludes HI and AK



Find a dealer


The OLAS EXTENDER effectively increases the length of the ‘virtual tether’ which exists between the OLAS transmitters (OLAS Tag and OLAS Float-On) and the OLAS Receiver (OLAS CORE, OLAS GUARDIAN,). Users on vessels up to 80 ft. in length can therefore now enjoy the comfort in knowing that within 2 to 4  seconds (depending on which OLAS receiver is in use) of a transmitter going missing, all synced receivers (excluding the EXTENDER which is solely used for extending the range of coverage of your OLAS system) will sound a loud audible alarm to alert crew of an MOB incident. In conjunction with the audible alarm(s), the ACR OLAS Mobile App records the latitude and longitude of the incident using the phone or tablets GPS, 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.


The EXTENDER can also be used with OLAS receivers and transmitters to cover areas where transmitter signals may be blocked, thereby providing a greater number of applications of the OLAS MOB System. With the increased range of coverage on larger vessels, the EXTENDER significantly expands the number of potential usage scenarios for the ACR OLAS MOB System, making it applicable to an even greater segment of recreational and commercial vessels.    




Catalog Bullets:

  • Extend range of the ACR OLAS MOB System up to 80 ft. vessels
  • Waterproof (IP67)
  • Utilizes the latest Bluetooth® Technology
  • Rechargeable battery option

Additional information

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


ACR Product Number

PN 2986



3.6” (H) x 3.5” (L) x 1.5” (W)/92 (H) x 90 (L) x 38 (W) mm


4.06 Ounces (115 g)


Black and Clear


Switch OLAS GUARDIAN or CORE into paring mode and switch OLAS EXTENDER on by pressing the button once

Power / Current

5V / 13-17mA

MOB System

Track up to 15 different OLAS transmitters with 1 phone/tablet via the OLAS GUARDIAN or CORE. 


The ALARM sounds within 2-4 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, Extender, Mobile App, Float-On, and Tag.

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 Contacts with GPS coordinates)

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



For use with vessels up to 80 feet (OLAS GUARDIAN or CORE required)





Yes (IP67)

Housing Material



Not Applicable


4.2 + 5.0


Recreational and Commercial Boating

Accessories (included)

USB Charging Cable


2 Years


FCC, RED, CE, RoHS 2.0



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, complete the form in your account. 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 when using the mobile app:


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.