What Do You Use For Dehumidifying Enclosures/Domes?

Super down in the weeds question, I know, but we are putting together an exterior enclosure with a switch in it and I am considering my options. The question has also come up regarding dome enclosures, which often have silica packets in them.

The switch is hardened, and has a very wide temp/humidity range, but I'd like to avoid humidity turning into actual condensation wherever possible, so I'd like to drop at least something passive to dehumidify in it. Has anyone ever used silica canisters like these in enclosures?

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Or is there something low voltage similar to these membrane dehumidifiers?

What other options are there for when there is no power or only low voltage available and space is at a moderate premium?

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