Mapped to a shared offline runtime family and usable with a recording or compatible ESP32 CSI stream.
Intended capability
Pilot this intended outcome through the shared Presence family, then validate it against site-specific ground truth: Detects presence, extended stillness and man-down inside walk-in coolers and freezers — the steel box no external CSI can see into — and escalates when a worker is still inside after hours or goes still mid-shift.
This describes the intended outcome. Readiness is shared-family mapped, evidence is class B, and a catalog mapping or recording is not proof of this outcome at a real site.
Solution blueprint
See the environment before installing it.
This exact kit is one of 191 first-class designs. It includes geometry, objects, nodes, wording, scenarios, installation, limitations, and catalog-bound readiness.
No rendered revision is available yet.
Bundled recording
A related Hospitality scene
This is one recorded vertical scenario. It is not separate validation of every capability in the catalog.
01 The physics
A walk-in is a near-Faraday steel enclosure, opaque to the 2.4 GHz mesh outside it. An LD2410C mounted inside detects moving and static (breathing) targets to 4-6 m and is rated for sub-zero operation; its UART runs through existing door conduit to an ESP32-S3 node outside the box, so no radio has to work from inside the enclosure.
02 Shared processing path
LD2410 in-box moving/static energy -> occupancy state machine (entered / working / still) -> stillness clock past policy hold -> after-hours-occupied alarm + man-down page via the outside node
This is a capability design path. Components may be shared with other catalog entries; it is not presented as a unique algorithm.
03 Validation plan
In-freezer trials at -20 C: presence and stillness discrimination against compressor vibration and evaporator-fan airflow; radome condensation and frosting soak test; staged man-down drills timing detect-to-page.
04 Commercial hypothesis
'Nobody gets left in the freezer' — for restaurant and grocery operators with lone-worker duty of care in cold rooms.