Fraud Blocker FAQ - Lone Worker Devices
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Frequently Asked Questions

How much does the lone worker device cost?

USD$ 357 including worldwide delivery

Purchaser is responsible for any import duty or local taxes (if any) into the country of purchase

Are there any ongoing costs?

No, once you purchase it, you own it.

You’ll need to provide your own SIM card with credit in order for the device to operate

Who monitors the lone worker device?

You decide. The device has up to 10 contacts that it can communicate with. You can change these contacts anytime you need to.

What SIM cards can I use?

The device works best with brand new, out of the box SIM cards- Nano size. You will need Voice, SMS & Data on the account. 

Recommended Networks

USA – Approved for  AT&T Network –AT&T. Will also work with T-Mobile.

Canada – Rogers, Bell, Telus, Tbaytel, MTS or Sasktel

UK & EuropeEE/ BT(UK), Vodafone, O2 & 3 Networks**

AustraliaTelstra, Vodafone or Optus

New Zealand2Degrees, Spark,

Singapore – Singtel


Network carrier’s main band; SIM cards must be compatible with at least one main frequency band to work.

SIM cards work on multiple frequencies, the more bands and frequencies your SIM card has in common with the devices listed frequencies, the better. It means your lone worker device will be able to pick up either the carrier’s VoLTE or 4G LTE more readily, in more places.

You want to especially make sure your device works on the carrier’s primary bands, as they represent the majority of the network signal they put out. Check with your local carrier to find out their main frequency band in your area.

*USA CANADA, SOUTH AMERICA – Comparable SIM cards must use 4G B2/B4/B12

**EUROPE/UK, AFRICA & ASIA – Comparable SIM cards must use 4G B1/B3/B7/B8/B20

OCEANIA AU/NZ -Comparable SIM cards must use 4G B1/B3/B5/B7/B8/B28

Please check with your local cellular carrier to see if their SIM cards work on the correct frequencies or visit here for an updated list of possible carriers

How do I program the lone worker device?

To program the device, change settings and turn features on and off, simply by sending a coded SMS(text) messages to the device using your own cell phone.

Can I change the nominated contacts?

Yes. Your nominated contacts be can easily changed by sending it a message with a new contact number

Can it call 911?

Yes. You can set 911 as one of the nominated contacts if you wish to set the outgoing call function.

NOTE: Not all 911 call centres will not receive the SMS ‘help me’ message or GPS location on Google Maps.

What countries do the devices work in?

We supply lone worker alarm devices world wide with country specific versions that will work in USA, Canada, South America, UK, Europe, Africa, Asia, Australia & New Zealand. Get in touch to find out more.

Is the Lone Worker Device waterproof?

You can wear it in the shower or rain, but not fully immersed

Do you deliver worldwide?

Yes, we can deliver devices worldwide. Purchaser is responsible for any potential customs, taxes or tariffs into the country of delivery

How To Measure Signal Strength

The lone worker device uses cell phone signals to communicate – just like a regular cell phone, though it has a much smaller antenna and power output. Measuring your signal strength can help you identify blackspots where the lone worker device may not have enough signal to operate.

Check With a Cell Phone App

We use LTE discovery which is a free app to search for cell phone signals.

LTE Discovery is a band identifier for 5G/4G and data analyzer. It allows you to measure signal strength, check your coverage, and find any dead spots.

You’ll need to be using a SIM card that’s going to be used in the device, such as AT&T for USA, Rogers in Canada, Telstra in Australia & EE in the UK. Install that SIM card into the phone you’ll be using

In the Signals area of the app, you’ll need to look for the 4G/LTE signal.

  • Close to no signal strength= -110 dBm – The device is unlikely to work
  • Poor signal strength = -85 dBm to -100 dBm The device may not be able to use a voice signal at the lower dBm, however SMS may still transmit
  • Good signal strength = -65 dBm to -84 dBm The device will operate normally
  • Excellent signal strength = -64 dBm to -50 dBm The device will operate normally

Through this tool, you can determine if the location of your location has a weak signal. When taking signal readings, move to the location where you want to take the reading, wait for 30 to 60 seconds for the signal readings to catch up.

Check Through the Phone Status (In Case of Android Devices)

Another way to check signal strength is through the Phone Status in Android devices. To do this, go to

Settings > About phone > Status > Signal strength. This will display the network type, signal strength

The closer the number is to 0, the better the signal strength. For example, -50 dBm is a strong signal; anything lower than -85 dBm can cause loss of voice or no connection at all.

Check With a Field Check Mode (In Case of iOS Devices) 

If you have an Apple iPhone or iPad, you can check the signal strength of connected devices using field test mode. Go to the settings of your model. Then, type in “Field Test Mode” or “Engineering Mode” in the search field. You should then find the field test mode, which will allow you to see your signal strength. It is usually displayed in decibels.

You can also find field test mode in the Dialer app of your device. First, go to settings and turn off the WiFi. Type in *3001#12345#* and press call to launch the field test mode menu. From the menu, select LTE, Serving Cell Meas, and then rsrp0 to get the signal strength from the nearest cell tower. Add +20 dBm to the resulting number (example -102 shown would be -82 dBm)

Use Signal Boosters To Solve Bad Cellular Coverage

Cell phone signal boosters are a great solution for bad cell coverage. These devices work by amplifying the cell signal from your cell tower to your connected devices, allowing you to stream and download content faster.

Signal boosters come in many forms, including cell phone repeaters, cell phone amplifiers, and cell signal boosters. These devices capture weak cell signals with an antenna and amplify them to provide a stronger signal to connected devices. With the right signal booster, you can increase the range of your cell signal to the Lone worker devices.

How do I GPS locate the device?

Send a simple SMS (text) message to the device and you will receive a return SMS with the devices location with link to google maps

Can I call the device?

Anyone can call the cell phone number of the device and chat to the user with in-built speaker and microphone. The device will answer automatically.

How does the fall detection work?

To activate fall detection / Man down automatically, it requires:

– 1 meter or more sudden drop in altitude

– Angle change like falling backward or forwards

– 1n impact thats could cause injury or incapacitation

If the above parameters are met or exceeded, the device starts its emergency sequence.

When the device detects a serious fall, the device will announce “Fall has been detected. Click the SOS button to cancel the fall alert sequence”. If the button is not pressed within 20 seconds the device will send the auto SMS fall down alert messages to the nominated contacts ( can also engage auto outgoing calls to each emergency contact one after the other. Fall detection technology is not perfect and false alarms can take place.

Why is my GPS location not accurate

GPS accuracy depends on your environment & settings.

The device GPS uses satellites and tracks your location up to around 20 meters. When you’re inside buildings or underground, the GPS is inaccurate as the signal finds it harder to get through.

Accuracy also depends on device settings. In default power saving mode, the device turns off the GPS when it has not detected movement for more than 2 min. This saves battery. In the event of an activation or tracking event, the device may give a ‘cold’ fix. This will be a less accurate location finding as the GPS has less time to establish contact to the GPS satellites. When the device detects movement, it tries to stay connected and gives ‘Hot’ fixes (very accurate depending on environment) .

Device can be programed to stay ‘all on’ & connected to the GPS satellites giving a constant ‘hot’ fix however battery life is substantially reduced.

If the device is unable to locate any GPS satellite signals, it will use GSM & Wifi signals to give a ‘relative’ location instead.

I’ve just started my device and the GPS is incorrect

The device needs line of site to satellites to get a full fix.

Leave the device by the window or outside for 15 minutes and it will connect to the GPS and give an updated reading

What are the recommended settings?

It is recommended that the device be set to send SMS out during emergencies and to have the outgoing auto calling turned off. In the event of an emergency, this allows any of the nominated contacts (up to 10) to immediately call into the device to establish communication.

If the devices is auto calling out, it cannot answer incoming calls.

How long does the battery last?

48 – 72 hours on a single charge. It depends on user settings

It takes approximately 3 hours to charge (magnetic charge supplied)