One sealed pod. Any helmet. Thirty seconds.
Overguard S1 clips to the rear band of any EN 397 safety helmet and streams live safety, position, and environmental telemetry to the platform. Three status LEDs, an SOS button, a debossed mark. Everything else is sealed inside.
Nothing to configure. Nothing to break.
The pod senses, the platform thinks, your team acts. Every interaction a worker needs lives on the outside of the housing, and nothing else does.
- 3-LED status strip
- Device, network, and alert state at a glance, readable through site grime.
- SOS button
- Deliberate 1.5-second hold. A knock or a glove brush never fires it.
- Debossed mark
- Debossed Overguard mark, machined into the housing. No stickers to peel.
- Charging contacts + USB-C
- Magnetic pogo-pin dock for the fleet, USB-C for the field.
- NFC provisioning zone
- Tap to assign, tap to audit. Provisioning without an exposed port.
- No screen
- No camera
- No microphone or speaker
- No exposed electronics
Seven kinds of safety event, on every helmet, all the time.
False alerts erode trust. We engineer them out.
Vehicle detection
When GPS speed crosses 15 km/h, high-G events are tagged as vehicular. No fall Alert when a worker takes the haul road.
Helmet-off detection
The pod recognises when a helmet has been set down and flags the worker as off-helmet rather than firing a man-down.
Graduated pipeline
Detection, confirmation, worker check-in, then Alert. Every event passes the same gates before it reaches a supervisor.
Always reaching the platform, even when the site can’t.
Every worker, outdoors and in.
- Outdoor. u-blox M10 GNSS receiver with GPS, GLONASS, and Galileo: 2–3 m accuracy in clear sky, re-acquired in seconds when a worker steps out from cover.
- Indoor. Bluetooth 5.2 mesh positioning via anchor beacons carries the same workers through basements, stairwells, and steel-framed structures where GNSS won’t reach.
The honest spec sheet.
Everything below ships on Overguard S1. If it isn’t on this list, it isn’t on the pod.
- Motion sensing
- 6-axis IMU (LSM6DSO): fall, impact, man-down, tilt
- Positioning · outdoor
- GNSS: GPS · GLONASS · Galileo (u-blox M10) · 2–3 m accuracy
- Positioning · indoor
- Bluetooth 5.2 mesh via anchor beacons
- Connectivity
- LTE-M / NB-IoT (embedded SIM) · 4G LTE fallback · LoRaWAN via site gateway
- Environmental sensing
- Temperature · humidity · noise (dB-A) · PM2.5 / PM10
- Gas
- BLE integration with external gas detectors: software receiver, no on-pod gas sensors
- Provisioning
- NFC tap + QR assignment
- SOS
- Dedicated button · deliberate 1.5 s hold
- Status indicators
- 3-LED status strip
- Battery
- 1,800 mAh · 10–12 h continuous
- Charging
- Magnetic pogo-pin dock + USB-C
- Ingress & atmosphere
- IP67 · ATEX Zone 2
- Dimensions
- 85 × 55 × 28 mm
- Weight
- 165 g
- Helmet attachment
- Rear-band clip · EN 397 compatible · no tools
The next pod is already on the bench.
Overguard S2 is in development, 18–24 months out. None of the capabilities below ship on S1, and none of them are needed for the platform to work today. Sites that deploy S1 now move to S2 on the same subscription when it arrives.
Everything a site needs, in one shipment.
- S1 pods
- One per worker, pre-configured for your site before they ship.
- Magnetic charging docks
- 80% charge in 45 minutes. One overnight charge runs a full shift.
- USB-C cables + quick start
- Field charging and a two-step quick-start card in every box.
- LoRaWAN site gateway
- Included for remote sites: commodity gateway hardware, configured by us.
- 01Clip the S1 to the rear band of any EN 397 helmet.
- 02Scan the QR code on the back of the pod.
- 03Assign the pod to a named worker.
- 04The worker appears on the live site map.
Under 4 minutes per device
Put S1 on your next site.
Hardware is included in the subscription: pods, docks, and gateway ship as part of pilot deployment, with no capital purchase.