OnSiren — Frontline. Connected.

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THU APR 233:02 AM

OnSiren gives security officers real-time threat intelligence and connects them with the officers around them.

A safer community starts with a connected security frontline.

OnSiren app

The App for the Frontline.

Meet Alpha One

Your AI threat-intelligence partner.

OnSiren app · Communication

Your Channel, Live.

The app opens on your channel, with the national threat level and the crime picture for your ground. Push-to-talk with the officers nearby, heard like a radio. Speak in your own language: every transmission is captioned, and anything not in English is translated.

The OnSiren app map: the St James’s channel with six officers on it, the MI5 threat level, the local crime rate and a push-to-talk button. Radio transmissions in Polish, Spanish and Romanian are captioned and translated into English.

OnSiren app · Incidents

Every Alert, the Moment It Lands.

Alerts arrive as notifications, not over the radio. Emergencies, lookouts and advice land in one log, each with its place and time. Raise one and it reaches the officers around you, wherever you are.

The OnSiren app Logs screen: a physical assault alert, a BOLO, a suspicious-person report and a road-closure advisory, with acknowledgement counts.

OnSiren app · Intelligence

Meet Alpha One

Briefed Before You Start.

Alpha One, the AI in the system, briefs you at sign-on: what has been raised nearby, the weather, what to watch for.

  • Daily briefYour local picture, wherever you are.
  • Threat alertsImportant changes near you, even when you work alone.
  • Radio checkStay connected to your local channel.
The Alpha One channel brief: an emergency raised on the channel, the weather, what to watch for, a verified OnSiren signal and a lookout.
The OnSiren app map: the St James’s channel with six officers on it, the MI5 threat level, the local crime rate and a push-to-talk button. Radio transmissions in Polish, Spanish and Romanian are captioned and translated into English.
The OnSiren app Logs screen: a physical assault alert, a BOLO, a suspicious-person report and a road-closure advisory, with acknowledgement counts.
The Alpha One channel brief: an emergency raised on the channel, the weather, what to watch for, a verified OnSiren signal and a lookout.
  • Daily briefYour local picture, wherever you are.
  • Threat alertsImportant changes near you, even when you work alone.
  • Radio checkStay connected to your local channel.
THU APR 233:02 AM
Westminster10 online
STATUSNETWORK ONLINE
SIERRA07

Suspicious Activity

WhenNow
ChannelWestminster
1:03
Transcribed message

Two males refused entry at the door just now — aggressive with my colleague, wouldn’t give ID. They’ve gone north past the station, one in a grey hoodie, one in a red cap. Eyes out if they come your way.

Reported by

SIERRA07

Seen by

9 OFFICERS

Broadcast
Issued by Police

Advisory

Two males refused entry at a Westminster venue, reported heading north on foot. Do not approach. Report any further sightings.

Status

Active · Westminster channel

Built for a connected frontline.

Security Officers

Push to talk.
Channel live.

Your local channel keeps you connected to verified officers nearby. Speak directly with the people on the ground when something changes.

OnSiren live incident alerts screen

Keep your community safe.

Send an alert in seconds. Nearby officers can see what you’ve seen, helping build a shared picture that keeps people safer.

OnSiren Alpha One channel status and briefing screen

Alpha One.
Your AI threat-intelligence
system and radio net control.

It keeps watch on your local picture, sends your daily brief, and alerts you when something changes, so you stay informed, connected and ready.

Join the connected frontline.
Reserve your call sign.

Reserve Call Sign

Law Enforcement

Intelligence from the connected frontline.

Verified SIA-licensed officers are the eyes and ears on the ground. Their alerts, radio traffic and local picture give your force timely intelligence when it matters.

OnSiren real-time incident map with live officer positions
OnSiren advisory and BOLO broadcast detail screen

Advisories and BOLOs, across the network.

Send targeted advisories and be-on-the-lookout notices to the areas that need them. Keep the connected frontline informed as the picture changes.

OnSiren borough channel map with live officer positions

A force multiplier for your force.

Connect the security officers already working across your borough. Turn their shared alerts and local intelligence into a stronger picture for policing. Your own units are never shown on the map.

Multiply your reach
across the borough.

Request Access

Businesses

Clear instructions.
When it matters.

Send clear, targeted instructions to the people who need them. Evacuate, move to a safe place, lockdown or all-clear. Help your team act quickly and consistently.

OnSiren crisis broadcast: a Fire/Explosion emergency pushed to every team member at once
OnSiren live venue map showing every team member on post

Know what is changing
around your venue.

Receive relevant updates from frontline officers and local advisories, helping your team build the picture before and during an incident.

One clear line
of communication.

Create controlled channels for the people responsible for your procedures. Keep the right teams informed, aligned and ready to act.

Strengthen your venue’s preparedness.

Book a Demo

Get early access to the OnSiren app

Be among the first officers on the network in your area. Reserve your call sign and we’ll have it waiting the moment your city goes live.

Reserve your Call Sign

Use the arrows or search to browse call signs. Use this same phone number when you sign up to the OnSiren app.

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OnSiren — Frontline. Connected.