What These Devices Were Actually Designed For
EPIRBs and PLBs are maritime and backcountry survival tools. They transmit a one-way distress signal through the COSPAS-SARSAT satellite system to search and rescue authorities, and in a life-threatening wilderness situation, that capability has genuine value.
But these devices were never engineered with workplace safety in mind — and treating them as a lone worker solution in Australia or New Zealand introduces significant compliance and operational gaps.
The Fundamental Limitations of One-Way Distress Beacons
Once a PLB signal is triggered, it cannot be cancelled, verified, or supplemented with additional information. There is no two-way communication, no check-in capability, no man-down detection, and no employer visibility over what is actually happening on the ground.
Alerts go directly to government search and rescue coordination, which can create false alarm complications, and provides no mechanism for an organisation to manage the incident internally before escalating. Under the WHS and HSWA frameworks, this absence of organisational oversight is a significant gap.
PLB vs Garmin InReach — Understanding the Difference
The Garmin inReach represents an improvement over a PLB — offering two-way satellite messaging and SOS capability via the Iridium network. For personal adventure use, it has merit. For workplace lone worker compliance in Australia and New Zealand, it still falls short.
The inReach has no man-down detection, no professional monitoring, and response coordination depends entirely on whoever receives the message — often a colleague, family member, or automated contact. That is not a managed emergency response.
Built for Workplaces, Not Wilderness
Guardian Angel Safety provides solutions designed from the ground up for workplace lone worker protection — not adapted from consumer adventure gear. With two-way satellite communication, man-down detection, and a 24/7 response centre that knows your people, your locations, and your escalation protocols, it’s a genuinely different category of protection.