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 Intrusion event family, then validate it against site-specific ground truth: Continuous dielectric mapping of walls and ceilings that detects and localizes hidden water intrusion (roof leaks, plumbing seepage, rising damp) days-to-weeks before visible staining or mold.
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 Frontier scene
This is one recorded vertical scenario. It is not separate validation of every capability in the catalog.
01 The physics
Water (eps_r~80) vs dry drywall/timber (eps_r~2-4): even a few percent volumetric moisture raises the local permittivity, which (a) slows propagation through the wall — increasing the excess delay of transmitted/reflected multipath taps by tens of ps-to-ns, and (b) increases sigma, attenuating specific paths. Paths that geometrically intersect the wet zone change; others do not, giving spatial selectivity.
02 Shared processing path
Stage 1 CIR sparse recovery isolates per-path delays/amplitudes -> Stage 5 RFF/NeRF inversion turns per-path delay+attenuation residuals into a voxelized eps_r/sigma map -> Stage 6 compartment Kalman + CUSUM tracks each wall-voxel over days/weeks and flags monotonic wetting drift -> Stage 3 anomaly manifold suppresses furniture/occupancy confounders via rolling baseline.
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
Own-hardware: instrument a drywall test cell with 6x ESP32 mesh, inject water at controlled rates (sponge/drip on hidden face), gravimetric moisture ground truth; verify monotonic delay/attenuation drift and localization error <1m. ESP32-wall dataset for through-wall path stability baseline.
04 Commercial hypothesis
'See the leak before the stain' — always-on hidden-moisture radar for property insurers, facility managers, and multifamily landlords, from the WiFi they already own.