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What to Do When Your Man Down Alert System Fails

What to do when your man down alert fails: tell someone first, then troubleshoot, plus the backup hardware layer that prevents a repeat.

Out on the job, whether you're in the bush, on a remote site, or working solo around heavy gear, your safety kit is your constant. Your man down or lone worker alert is one of those tools you never want to see fail. But sometimes it does. What then?

When the thing meant to protect you stops working the way it should, it's not just an annoyance, it puts your safety at genuine risk. This doesn't wait for convenient timing, so it helps to have a simple plan ready before you need it. Here's what to do when your alert fails, in the order that actually matters.

This guide covers the fault itself. For the full picture, including your legal duty, choosing devices and building a response plan, see our Lone Worker Safety NZ guide.

// Key Takeaways

  • Tell someone your safety net is down before you start troubleshooting, not after. That single call is what keeps you protected if things get worse while you're fixing the device.
  • Most alert failures are simple: flat battery, a dead zone, or an accidentally muted alert. Check these first, but don't let checking delay notification.
  • If digital alerts fail, fall back to manual voice check-ins at fixed intervals, this is slower than an automated alert but it's proven and reliable.
  • If you can safely move, higher ground or a clearer line of sight gives a device a real chance at reconnecting.
  • Every failure is worth a proper post-incident review, not for blame, but to close the actual gap before it happens again.
01 · Do This First

Tell Someone First

Before you spend time troubleshooting, get word to someone that your alert system is down. This is the single most important step, and it's the one that's easiest to skip when you're focused on fixing the actual fault.

If you have any working communication at all, radio, phone, or a second device, use it now to tell your base or supervisor that your primary alert isn't working, and give them your last known location and planned movements. That way, if something goes wrong while you're still troubleshooting, someone already knows to escalate rather than waiting on a check-in that was never going to come.


02 · The Basics

Check the Obvious

Once someone knows your system is down, do a quick check. Faults can often be fixed fast.

  • Is the device on and holding enough charge?
  • Could you have moved into a dead zone for coverage?
  • Have you bumped the device or unknowingly muted the alert?

A soft button press, a low battery, or interference from surrounding structures might be the cause. Start here, but don't let this step become a long solo investigation, if it's still unresponsive after a quick check, move on.


03 · The Fallback

Revert to Manual Check-Ins

If your alert system stays quiet, switch to a manual safety routine:

  • Check in over voice at regular times, every 10 to 15 minutes.
  • Confirm expectations with your base so they know exactly when to expect your next call.
  • If radio calls aren't working, try an alternate device such as a satellite phone or PoC unit.

It's slower than a digital alert, but it's proven. In terrain like steep hillsides or dense cover where signal drops out entirely, regular voice contact gives your team a clear signal if something goes wrong.


04 · The Technical Fix

Restart and Resync

Once someone knows you're offline and you've got a manual check-in routine running, a restart is worth trying:

  1. Power the device off completely, wait a few seconds, and turn it on again.
  2. Look for reconnection to your network or main communications link.
  3. Resync it with the rest of the crew's system if needed.

Ask your team if anyone else is noticing glitches too, it might be a broader sync or network issue rather than your device alone. Catching a wider failure early is worth the couple of minutes it takes to ask.


05 · If You Can Move

Get to a Safer Location if Possible

Sometimes the best move is to relocate, especially if you're deep in a gully, thick bush, or a known dead zone, if structure or vehicle interference could be blocking your signal, or if limited visibility would delay a search if one became necessary.

Aim for higher ground, a clearer line of sight, or shelter if conditions are changing. Even a short walk in the right direction can give a device a real chance at reconnecting and give your team a better chance of finding you quickly.


06 · Afterward

When Things Settle: Check, Fix, and Learn

Once you're safe and everything is working again, review what happened. It's not about blame, it's about closing the gap.

  1. Have the device checked by someone with technical skill.
  2. Talk to your team about how long it was offline and how you kept contact.
  3. Update your safety plan to cover this scenario for next time.

Every failure is a chance to ask a genuinely useful question: if the same issue happened again tomorrow, would you be better prepared?

07 · The Backup Layer

What MSL Actually Recommends

A single device is a single point of failure. All currently in stock and priced in NZD.

◆

Primary Radio with Man Down

Tait TP9355, from $1,640

Automated man-down and lone-worker alerts built into the daily-use radio itself, the first line of defence.

View the TP9355 →
◆

Satellite Messenger Backup

Garmin inReach Mini, $829

Two-way satellite messaging with SOS, monitored via Garmin's GEOS emergency response service, for when radio and cellular both fail.

View the inReach Mini →
◆

Last-Resort Emergency

GME MT610G PLB, $565

A genuine last resort with no subscription fees, GPS-equipped, for when every other layer has already failed.

View the MT610G →

The right combination depends on your terrain and risk profile. Get in touch for a tailored remote safety assessment, or browse our occupational safety and health range.

08 · Getting It Right

Your Safety Doesn't Pause When Tech Fails

A failed alert isn't just a technology issue, it's a matter of trust. We rely on this gear to do its job, especially when working alone. Mobile Systems Limited is 100% NZ owned, based in Mount Maunganui, and has served NZ businesses for over 25 years. We supply and install worker safety solutions including UHF/VHF radios with man-down alerts and satellite devices with monitored SOS, and provide on-site support across the Bay of Plenty, Coromandel, Rotorua, Taupō, South Waikato, Volcanic Plateau and Eastern Waikato, with nationwide equipment supply.

If your gear hasn't been dependable, or you're unsure about your backup plan, get in touch to review your current setup for weak points.

Review Your Lone Worker Safety Plan

25+ years supplying and installing communication systems for NZ businesses from Mount Maunganui, with nationwide equipment supply.

Contact Our Team →

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