Presence detection
without cameras,
without wearables,
without compromise.
Sense Guardian turns a building's mesh Wi-Fi into a privacy-first sensor for motion, occupancy, falls and breathing — using nothing but the radio waves that already fill the room.
A mesh of radio waves becomes a map of the room.
Every Wi-Fi packet between two mesh nodes carries Channel State Information — a fingerprint of how the radio wave bent around walls, furniture, and people. Sense Guardian reads thousands of these fingerprints a second and turns them into structured signals.
Mesh nodes listen
Sense Guardian hubs (or ESP-CSI compatible mesh nodes) measure how Wi-Fi signals scatter through the space. No microphone. No camera. No image ever leaves the room.
Cortex AI infers behaviour
Our edge models classify the CSI stream into presence, motion intensity, occupancy count, breathing rate, and fall events — running on the same hardware family as the rest of the Guardian platform.
Portal raises the right alert
The EM8 Portal turns inferences into actions: a wellness check missed, a void alarm tripped, an occupancy threshold breached. Routed to your team, your client, or your ARC partner.
When a camera is too much, a mesh is just enough.
Some rooms shouldn't have cameras. Bedrooms, bathrooms, dignity-sensitive spaces in care settings, residential lets where tenants have a right to privacy. Sense Guardian sees enough to keep someone safe — and nothing more.
No images are captured. No biometric identifiers are stored. CSI data is processed on-site and only the resulting events — "fall detected", "no movement for 4 hours", "room occupied" — leave the building.
Four installer-grade use cases, one piece of hardware.
Sense Guardian is sold as a subscription module under the EM8 Portal. The same mesh nodes serve assisted living, smart buildings, void monitoring and high-end residential — pick the licence that fits the site.
Wellness checks without watching.
Detect falls, prolonged inactivity, abnormal night-time movement and breathing irregularities — without putting a camera in a bedroom or asking a resident to wear a pendant they'll forget.
- Configurable inactivity windows per room
- Fall events routed to ARC or care provider
- Audit trail for CQC inspections
Real occupancy, not badge guesses.
Drive HVAC, lighting and cleaning schedules from how the building is actually used — not from access control logs that miss visitors and silent meeting rooms. Per-room, real-time, no PII.
- BMS / BACnet integration via the EM8 Portal
- Heatmaps for FM and space-planning
- Energy-saving ROI inside 18 months
Insurance-grade intrusion sensing.
Empty stock rooms, vacant commercial units, second homes and listed buildings — Sense Guardian flags the first footstep before a camera or PIR has anything to look at, and works in total darkness.
- Through-wall presence detection
- No conduit, no drilling, no mains
- ARC handover via Cortex Connect
Ambient awareness for the connected home.
An invisible safety net for elderly relatives, a child's bedroom, or a guest annexe. Pairs with smart-home automation: no movement at 9am triggers a wellness call. No need to install anything visible.
- Works alongside any Wi-Fi 6 / 7 mesh
- App alerts via the EM8 HQ companion
- Quiet by default — it only speaks when something matters
Built in Cardiff, on the same hub as the rest of the Guardian family.
The Sense Guardian hub shares its silicon, enclosure and provisioning workflow with Surveillance Guardian, Tracking Guardian and Pump Guardian — meaning a single SKU pattern, a single training day, and a single support contract for your engineers.
Enclosures are 3D-printed in-house at our Cardiff facility, so we can iterate on antenna placement, mounting options and customer branding without waiting on injection-mould lead times.
Request a hardware sample →Quietly watching, never recording.
Sense Guardian is rolling out to selected installers and care groups through 2026. Contact us to Book a one-to-one technical demo.