Ramsey STE-3000 Shielded Test Enclosure

Smart Meter in a Faraday cage used to isolate RF signals.

From Wikipedia: A Faraday cage or Faraday shield is an enclosure used to block electromagnetic fields. A Faraday shield may be formed by a continuous covering of conductive material, or in the case of a Faraday cage, by a mesh of such materials. Faraday cages are named after scientist Michael Faraday, who invented them in 1836.

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  Closed cage with mesh/plexiglass window for viewing devices under test (DUT) and holes for your hands to interact with DUT using metal mesh gloves.
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  Open Faraday cage, lights can be seen and blade connectors for passing in power.
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  BNC and DB9 on this older unit for passing signals in/out.
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  Internal image with view of gloves