OLAS Guardian Wireless Engine Kill Switch - Ultimate Sports Engineering Ltd

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OLAS Guardian Wireless Engine Kill Switch


The OLAS Guardian is a wireless engine kill switch that acts within two seconds of a person falling overboard. It has the dual function of also acting as an instant, Man Overboard Alarm system. The Guardian simply connects with up to 25 OLAS transmitters and can cover a vessel up to 50ft.

In The Box:Guardian, OLAS Tag + Battery, Power Connection wires, Kill cord connection wires, Stainless steel switch, User Guide, 5 x marine connectors.

Guardian Video Playlist

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What it does

OLAS Guardian means power boat and RIB drivers are assured that their boat will stop in an instant, should the skipper or crew get separated from the boat, reducing the chances of a serious accident from a loose, unmanned, uncontrolled powerboat. They are free to move around their boat without constantly having to remember to attach, detach and re-attach a physical wired kill cord.

How it works

  • Up to 25 OLAS transmitting devices (OLAS tag/OLAS Float-On) within range can be tracked around the vessel by the Guardian. This allows freedom for the crew and skipper to move around the vessel with confidence that if anyone falls overboard either the engine will be cut-off and / or an alarm will occur, and a swift recovery can be actioned.
  • The Guardian connects to a vessels 12/24v power supply and existing kill switch using the supplied connectors making it quick and easy to install with immediate usability.
  • A 21mm hole is required near to the existing kill switch for the 20mm stainless steel, LED control switch to be installed.

Professional installation is not required but is advised as Ultimate Sports Engineering does not accept any liability for incorrect installation.

OLAS Guardian Wireless Engine Kill Switch

Who is it for

OLAS Guardian is for drivers of power and motor boats, and all skippers and boat owners concerned about onboard safety. It wirelessly connects up to 15 crew members via wearable OLAS transmitters (wrist Tags or OLAS Float On Light) creating a virtual kill cord.
OLAS Guardian Wireless Engine Kill Switch
OLAS Guardian Wireless Engine Kill Switch

Core Advantages

  • Run alongside existing Kill switch - The Guardian can be used in-place of or alongside an existing kill cord switch and will operate if the physical kill cord has not been attached to the driver. - On most engines a simple parallel connection to the existing kill switch will enable full wireless cut-off capability.
  • Automatic restart - After 5 seconds the kill switch is deactivated enabling the engine to be restarted
  • Inbuilt Alarm - An 85db alarm will sound to indicate an OLAS transmitter has gone out of range.
  • Inbuilt Emergency Light (if externally mounted) - A high-power emergency Red light will illuminate, offering clear visual indication of an alert whilst also acting as a light to illuminate the surrounding area.
  • Relay selection - The OLAS App allows individual relay selection for easily adjusting if the OLAS transmitter triggers the engine cut-off/relay, or only triggers the Guardian's inbuilt MOB alarm.
  • Automatic connection - When you board your vessel and switch on the power, The Guardian will automatically connect to any switched on OLAS transmitting devices within 2 meters rage.
  • No connection alert and override - If you board the vessel and no transmitters are switched on, the Guardian will sound an alert. This alert can be stopped either by connecting the OLAS transmitter to the Guardian or the Guardian can be manually switched off. After which the vessel can be driven as usual using the exiting physical, safety kill cord.
  • Pause mode - The system can be placed into a pause mode. This is used when you need to leave the boat with the engine idling, such as walking down a pontoon, knowing the OLAS transmitter will go out of range.
  • Connects up to 25 OLAS Transmitters (OLAS Tags or OLAS Float-On) - Up to 25 transmitters allows larger vessel to connect crew and objects to the Guardian. Simply by attaching a transmitter to object such as a MOB flotation device or yacht tender you can always be aware if something has gone missing.
  • Extender compatible An OLAS Extender can be used to cover areas where transmitter signal may be blocked. This allows use on larger vessels up to 80ft and the ability to scale the system up if required.

OLAS Guardian Wireless Engine Kill Switch

Mobile App Features

The Guardian is easily operated via the OLAS App, free to download from the App Store for iOS and the Google Play Store for Android. The OLAS app requires a device running the minimum of IOS11 or Android 5.1 to work. The OLAS App is a powerful tool for controlling the Guardians functions and for aiding in fast rescue.

  • Monitor all OLAS transmitters that are being tracked
  • Customise OLAS transmitter Names making them easy to allocate
  • Check battery status for OLAS tags

Guardian Control
  • Add new OLAS transmitters to the Guardian system.
  • Pause the Guardian system if transmitters are leaving the area for a short period.
  • Adjust the time before the Guardian reacts to an overboard transmitter between 2 seconds to 15 seconds, allowing more freedom around larger vessels.
  • Adjust between cut-off switch and external alarm mode.
  • Kill switch mode activates the inbuilt switch for 5 seconds, cutting off the engine, but allowing users to restart the engine after 5 seconds.
  • External alarm mode activates the inbuilt switch until it is manually cancelled. This allows external, high power, alarms to be connected in series.
  • Pause the alarm state.

Transmitter control
  • Easily adjust individual transmitters between Engine cut-off (for the skipper), Alarm only (for passengers) and Pause (for passengers leaving the vessel temporarily).
  • sounding the external alarm if a Tag wearer is out of range on both the Guardian and your mobile device.
  • Adjust the time before the cut-off switch or alarm is triggered – offering greater freedom.

External Alarm and rescue aid
  • Maximum volume alarm and vibration on your mobile phone, synchronized with the Guardian.
  • Indication of which transmitter has triggered the alarm./li>
  • Record the GPS location of where the alarm was triggered
  • Clear guidance back to the GPS location where the alarm was triggered.
  • Clear display of the time and GPS location of where the alarm was triggered and the user's current location. • VHF emergency script with automatically input GPS co-ordinates and custom vessel information Solo Mode.
  • Designed for when boating on your own within 2G cellular range or offshore Wifi. Solo mode will send an automatic text message to a custom number with your location and time of the incident. If a self-rescue is managed an automatic text is sent cancelling the alert.

Setup and Mounting

12/24V wired

The Guardian module can be connected to your vessels power supply to ensure it is always connected when you have the power running. The power wires can simply be spliced into an existing power supply from the boat’s battery.

Through panel mounting

The compact, stainless steel switch requires minimum adjustment to your existing center console, allowing it to be fitted through a 21mm hole.

Color coded control switch

The color-coded control switch makes the system easy to control and setup, without the need for the OLAS App. During the setup process, it will indicate the automatic setup stages with a red indicator light. When the system is running it shows a green light, switching back to red in an alarm situation.

System Feedback

The GUARDIAN clearly indicates how many OLAS transmitters are connected during the setup process.

Transmitters can be added to the system either using the mobile application or through simple inbuilt switching process.

OLAS Guardian Wireless Engine Kill Switch

The Guardian Smart Lock System

What is the Guardian Smart Lock?

The Guardian Smart Lock acts as a secondary key system, locking the vessels kill switch system to limit the risk of opportunistic theft and restricting use to Smart key holders or those with the Guardian’s access pin number.

Any OLAS tag or Float-On can be allocated as a Smart Key within the OLAS app. If the user arrives at the boat with a ‘Smart Key’ allocated OLAS tag or OLAS Float-On the Guardian will automatically unlock.

If you don’t have an allocated Smart Key with you then the OLAS mobile app can be used to unlock the Guardian using the custom access pin code.

Setting up the Guardian Smart Lock

1. Check you are running the lasted version of the OLAS application within the App store or Google Play.

2. Check you are running the latest version of Firmware.

3. Connect to the Guardian with the OLAS application and set a Smart Lock pin number.

The pin number is now saved to the Guardian and is then required to:

1. unlock the kill switch system.

2. activate and deactivate Smart Lock within the app.

3. reset Smart Lock or change the pin number.

To enable Smart Lock click on the lock icon.

To enable a Smart Key, click on the transmitter’s icon.

Frequently asked questions

I do not have my OLAS Smart Lock Key?

Connect any mobile device with the OLAS app and enter your pin number to unlock the Guardian. The OLAS app can also be used as a Smart Lock key. If the code has been previously entered it will automatically unlock the Guardian when it is first connected.

How do I activate Smart Lock?

The OLAS mobile applications home screen allows the user to activate and de-activate the Guardian’s Smart Lock, using the stored pin number.

Do I need to buy a new OLAS Tag or OLAS Float-On for this feature to work?

Smart Lock works with the existing OLAS Tag and OLAS Float-On. The Smart Lock key feature can be switched ON/OFF for any OLAS Tag or OLAS Float-On using the OLAS mobile application.

Multiple people will be using the boat at different times, do they each need a Smart Lock key?

Up to 25 x OLAS Transmitters can be activated as Smart Lock keys and only one key is required to unlock the Guardian, allowing multiple keys to be shared between users. The OLAS mobile application can also be used to unlock the Guardian.

Installing The OLAS Guardian


Name File Type Date Modified
OLAS Guardian User Guide Firmware 1.0 PDF Dec 21 2022
OLAS Guardian User Guide Firmware 2.0 PDF Dec 21 2022
OLAS Switch Template PDF Jan 05 2023


Power/Current 10-32V / 13-17mA
Vessel Length 50ft
Connected Transmitters Up to 15
Weight 110g
Size 92 x 90 x 38mm
LED Output 55 lumens
Buzzer Output 85dB
Waterproof Rating IP67


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