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Faraday cloths work!
Sides must be sealed!

Super HOT spot inside my house where the smart meater is located on the outside wall.
I used wide painters tape to seal the edges. Without which the EMF readings were still HOT!

House paint containing lead also works.

The one I purchased isn't currently available, however, this one has reviews with the same results I achieved,
and a larger piece of fabric.

https://www.amazon.com/dp/...

Check out the reviews for tips.

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