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Lone-Worker Safety with Two-Way Radios: Emergency Button, Man-Down and GPS
Lone-Worker Safety with Two-Way Radios: Emergency Button, Man-Down and GPS
Published by Bravosatcom · Two-Way Radio Series
Security guards on night patrol, technicians on remote sites, housekeeping staff on empty floors and warehouse workers on late shifts all share one risk: if something goes wrong, nobody is there to see it. A two-way radio is already in their hands, and modern radios can turn it into a safety device that raises the alarm when the worker cannot.
This guide explains the main lone-worker features, how they work together, and how to set them up so an alarm actually reaches someone who can act.
The Main Lone-Worker Features
| Feature | What it does | Typical use |
|---|---|---|
| Emergency button | Sends an alarm to a dispatcher or group, and can open the microphone so the control room can listen | The worker is threatened or hurt and can still reach the radio |
| Man-down | A motion sensor detects that the radio has tilted past a set angle or has stopped moving, warns the user, then raises an alarm if there is no response | The worker has fallen or is unconscious |
| Check-in timer | Asks the user to confirm they are fine at set intervals, and raises an alarm if there is no response | Long periods alone with no radio traffic |
| GPS location | Reports the radio’s position to the control room | Finding a worker across a large or outdoor site |
| Text messaging | Sends short alerts and replies without voice | Quiet or noisy situations where speaking is difficult |
Available features vary by radio model, and several depend on digital (DMR) operation. Some analog radios offer basic emergency signalling, but the full set is a digital capability. See our comparison of analog and digital DMR radios.
How an Alarm Reaches Help
Man-Down Without the False Alarms
Man-down is the feature most likely to be switched off after a week, because a radio set down on a bench can look like a fallen worker. Good configuration avoids that. A pre-alert tone warns the user first, and they can cancel it before any alarm goes out.
Setting It Up Properly
- Name who receives alarms and who responds, including out of hours. An alarm with no one watching is useless.
- Choose radios with the features you need, and check whether they need a control room or supervisor application.
- Tune the settings. Set the tilt angle, pre-alert and countdown times, and the check-in interval to suit the work, so alarms are real and trusted.
- Confirm coverage everywhere the worker goes, including stairwells, basements and plant rooms. See our guides to planning coverage and repeaters vs direct mode.
- Plan the battery for a full shift with GPS and alarms active. See batteries and accessories.
- Carry the radio on the body, not in a bag, and consider a speaker microphone so the emergency button is always within reach.
- Train and test on a regular schedule, so workers know what each tone means and the control room knows what an alarm looks like.
For harsh sites, choose radios with the right protection; see rugged radios and IP ratings. Browse the portable radio range for models with these features.
Frequently Asked Questions
What is man-down on a two-way radio?
It is a motion sensor feature. If the radio tilts past a set angle or stays still for too long, it sounds a warning, and if the user does not respond within a set time it sends an emergency alarm.
Do I need digital radios for lone-worker features?
For the full set, yes. Features such as man-down, check-in timers, GPS reporting and acknowledged alarms are generally digital capabilities, and some analog radios offer only basic emergency signalling. Check each model’s specification.
Does GPS work indoors?
Usually poorly. GPS needs a view of the sky, so it works best outdoors. Indoor location needs additional methods, such as beacons, if your system supports them.
How do I reduce false alarms?
Adjust the tilt angle and the pre-alert and countdown times to suit the work, train staff to cancel the pre-alert promptly, and have them wear the radio rather than set it down. Review the alarm log and adjust where needed.
Two-Way Radios for Safer Lone Working
Bravosatcom supplies two-way radios from Motorola, ICOM and Kenwood, with the accessories and cable to build a reliable system.