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When the grid goes dark, the warning stays on.

The SAFE Network™ is a self-forming mesh of Portable Alerting Units that broadcast audio and visual emergency alerts with no cellular, no Wi-Fi, and no internet required. Built for the moment infrastructure fails — and people still need to be told what to do.

AcronymStandalone Alerting For Emergencies
ConnectivityNone required · RF mesh
Standby PowerUp to 5 days
Form FactorWall-mount or portable
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SAFE Network alerting unit showing a hurricane warning
99.98%Uptime across sites
<2sAlert response time
24/7Continuous coverage
0
Cellular / Wi-Fi required
5d
Standby on battery
3,000+
Units deployed
2-way
Audio + visual alerts
What it is

A warning network that doesn't depend on the networks that fail first

The SAFE Network™ is a mesh of Portable Alerting Units (PAUs) — compact, self-powered devices that deliver loud audio and high-visibility visual alerts the instant an emergency is declared. They talk to each other over a private radio mesh, so the message propagates even when cellular towers are saturated, power is out, and the internet is gone.

Mount them on a wall in a classroom, a barracks, a control room, or carry them to a stadium concourse. Wherever a PAU sits, it becomes a relay — every node strengthens the network and closes the dead zones legacy systems leave behind.

It's the answer to a simple, brutal question: how do you warn people when the things you'd normally warn them with are already down?

No connectivity requiredSelf-forming RF mesh — no SIM, no router, no service contract, no single point of failure.
Up to 5 days standby powerOnboard battery keeps every unit live through extended outages, then recharges off normal AC.
Audio and visual togetherSpoken/tone alerting plus bright strobe — reaching the hard-of-hearing and high-noise spaces alike.
Mount it or move itWall-mountable for fixed coverage, fully portable for events, deployments, and surge needs.
Meet the hardware

The SAFE Unit, a warning station you can carry into the fire zone

Each Portable Alerting Unit is a rugged, self-contained warning station engineered for the harshest conditions. The wildfire-ready configuration pairs a high-output speaker array with a bright visual beacon and onboard battery — so it keeps broadcasting where smoke, heat, and downed lines knock everything else offline.

Drop one at an evacuation chokepoint, a staging area, or along a fire perimeter. It joins the mesh on power-up, relays the alert to every neighboring unit, and turns any location into a verified warning node in minutes.

High-output audioCuts through wind, smoke, and crowd noiseRugged
Weather-hardened shellBuilt for outdoor wildfire deploymentsField-ready
Up to 5-day batteryStays live through extended outagesOff-grid
Why it matters

Engineered for the moment everything else goes quiet

Most alerting assumes the infrastructure survives the emergency. The SAFE Network™ assumes it won't.

Works when infrastructure fails

Earthquakes, wildfires, cyber events, grid collapse — the SAFE Network™ keeps broadcasting independent of the systems most likely to be the first casualties.

Self-healing mesh

If one unit drops, the others reroute around it automatically. Coverage degrades gracefully instead of collapsing — there is no central node to take down.

Fast to scale

Add a unit, it joins the mesh. No trenching, no cabling, no carrier provisioning — extend coverage to a new wing, lot, or perimeter in minutes.

SiSA integration

One activation, every channel, including the SAFE Network™

Operators add the SAFE Network™ as a destination right inside the SiSA™ platform, alongside sirens, desktop alerts, and IPAWS. One message, one click, sent everywhere at once.

In the SiSA console

Already part of your alert stack

From the same activation screen your team already uses, the SAFE Network™ appears as a selectable destination. Operators choose it on its own or with every other channel — the message reaches the mesh and the outdoor sirens and the federal gateway in a single send.

No new tool to learn, no second login. The SAFE Network™ behaves like every other SiSA channel: pick it, send it, watch it confirm.

See SiSA in action
Giant Voice outdoor sirensVoice + tone, wide-area coverageSelected
Indoor & desktop alertsWorkstation takeoverSelected
IPAWS / WEAFEMA federal gatewaySelected
SAFE Network™All devices alerted, no grid needed.Selected
Who it's for

Built for the places that can't afford to go silent

Cities & municipalitiesOff-grid public warning → Campuses & schoolsClassroom-level coverage → Military installationsResilient base alerting → UtilitiesSite & substation warning → Event venuesPortable crowd alerting → Industrial sitesHigh-noise zone alerting → Oil & gas fieldsWide-area remote alerting → HealthcareHospital code & evac alerts →
“
The whole point is that it doesn't ask permission from anything. No power, no signal, no problem — the units just keep talking to each other and getting the alert out.
HQLead Systems EngineerHQE Systems
Standalone Alerting For Emergencies

See the SAFE Network™ broadcast, even with the plug pulled

Tell us your site, your dead zones, and your worst-case outage. Our veteran-led team will scope a SAFE Network™ deployment and show you exactly how it slots into your SiSA™ alert stack.

Request a demo 1.800.967.3036