Overguardoverguard.app
40 construction workers killed in the UK last year · HSE 2024
Every year,workers are seriously injuredor killed on work sites.
Most had a warning sign.Nobody saw it.
Overguard sees it.

Connected PPE that detects what passive safety equipment cannot — and alerts in under 3 seconds.

↓
A REAL SCENARIO
07:43 · Zone B – Structural · Blackwall Reach
James Hartley, Steel Fixer, falls from height.
S1 detects 4.2g impact force. No movement for 8 seconds.
0.0s
Fall detected by the S1 IMU sensor
1.4s
GPS coordinates locked. Platform alert generated.
2.9s
Site manager notified with exact location, worker identity, and sensor data. Emergency protocol initiated.
Total detection to alert:
2.9 seconds.
Industry average:
18 minutes.
This is what happens every time. For every worker. On every site.
The S1 detects and alerts:
Fall detection
IMU · edge ML
<3s
Man-down detection
8s threshold
<3s
Lone worker protection
check-in timer
<3s
GPS + indoor positioning
outdoor + BLE indoor
<3s
SOS activation
deliberate press
<3s
Gas threshold (BLE)
pairs with detectors
real-time
Geofence breach
zone boundary
<3s
Exclusion zone alerts
restricted areas
<3s
Overguard S1 — product illustrationOverguard S1 safety sensor pod front-facing view with callout labelsSOSOVERGUARDStatus stripTeal · 9 LEDsLTE-M antenna4G · BLE 5.2SOS buttonChrome · deliberate pressUSB-C portFast chargeMagnetic dock4-pin pogo · fleetIP67 sealDust · waterproof6-axis IMUFall · impact · MLOverguard S1 — 85 × 55 × 28mm
Clips to any EN 397 safety helmet
Overguard S1 fitted to safety helmetWhite EN 397 safety helmet shown in three-quarter rear view with the Overguard S1 sensor pod clipped to the rear bandOVERGUARDLIVE
THE HARDWARE

The Overguard S1.

Clips to any safety helmet in 30 seconds. From that moment — every fall, every SOS, every warning sign reaches you instantly.

165g total weight
12h+ per shift
IP67 rated
Retrofits to any EN 397 certified helmet
Four layers.
One platform.
Under three seconds.
01
ALERTS
Something is happening.
Every fall, SOS, man-down, and geofence breach reaches the right person in under 3 seconds.
02
RISK SIGNAL
How safe is it right now?
A live score — 0 to 100 — for every worker, zone, and site. Updated every 5 seconds. Not a report. A live signal.
03
INSIGHTS
What is about to happen.
Overguard AI detects patterns before they become incidents — and tells you exactly what to do.
✦ Powered by Overguard AI
04
REPORTS
The automated evidence trail.
RIDDOR, ISO 45001, and insurance documentation — automatically, without manual input.
✦ Overguard AI
Not an alert platform.
An intelligence platform.

Overguard AI analyses patterns across your entire workforce — sensor data, alert history, environmental conditions, and behavioural drift — to tell you what is about to happen. And what to do about it.

TEMPORAL ANOMALY
Zone B alert rate 3× site average — 09:00 to 11:00.
Six alerts in Zone B between 09:00–11:00 this week vs a baseline of 2. Heinrich’s Triangle predicts a recordable event within 2 weeks at this near-miss density.
RECOMMENDED ACTION
Schedule a toolbox talk before tomorrow’s 09:00 shift. Supervisor walkthrough of Zone B at 08:45.
94% pattern confidenceOverguard AI ✦
COMPOUND INDICATOR
Fatigue signature detected on 4 workers. Slip risk elevated.
Movement variability down 38%, resting heart rate up 12 bpm, dwell time elevated. Three-signal compound — historically precedes slip/trip within 90 minutes.
RECOMMENDED ACTION
Initiate welfare checks for the 4 affected workers. Rotate out of Zone B for the remainder of the shift.
94% pattern confidenceOverguard AI ✦
PRECURSOR DETECTION
Near-miss frequency up 175% week-over-week.
Near-misses climbed from 4 to 11 this week. At 1:30 ratio, a recordable injury is likely within 14–21 days unless conditions change.
RECOMMENDED ACTION
Convene a safety standown. Review near-miss log with all zone supervisors today.
94% pattern confidenceOverguard AI ✦
Other platforms tell you what happened.
Overguard tells you what to do before it does.

The numbers.

Without Overguard
0
minutes to locate an injured worker
Source: UK HSE construction incident response data, 2023
→
With Overguard
<3
seconds from event to GPS alert
Based on LTE-M latency benchmarks and on-device processing
Our commitment
0
acceptable preventable fatalities
Our founding commitment
In those 18 minutes — Overguard has already found them, located them, and got help moving.

See it. Right now.

Live platform. Real data. No setup required.

overguard.app/dashboard
A · GROUNDWORKSB · STRUCTURALC · M&ED · PLANT⚠ Fall DetectedJHJames HartleySteel Fixer · Zone B · 2.9sACKViewDispatchBlackwall ReachLIVE94 on site· 8 alerts· 1.8s latency
Enter live demo →
No account needed — explore as site manager, worker, or employer
Overguard

Running our first pilots now.

We are selecting a small number of infrastructure and utilities organisations to deploy Overguard on live sites. Pilot clients get priority access to the Overguard S2 — and direct access to the founding team throughout.

Your site. Your workers. Your exact risk profile.
All hardware supplied and configured by Overguard.
4 weeks. No cost. No commitment required.
Direct access to the founding team throughout the pilot period.
We believe zero preventable fatalities is achievable.
That is why we built this.
Request a pilot →Enter live demo →
hello@overguard.app
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