Expert in Humidity Indicator Cards Since 2006
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Humidity indicator plugs are designed to indicate the relative humidity level within a sealed container withoutusers having to open it.
Humidity indicator plugs work much like humidityindicator cards but can be screwed into the outsidewalls of sealed containers. Made of Aluminum, Stainless Steel, Nickel Brass, Plastic, they feature large, clear viewing windowsfor easy reading of humidity levels within the container.
