Humidity Indicator Plugs use colour changing discs, which change from blue to pink as the humidity increases. They are fully reversible so will change back to blue when the humidity decreases by adding desiccant into your container. These Humidity Indicator Plugs are available with colour change disc that are single level, two level three level or 4 levels, depending upon the application and which desiccant type you are using to protect your Container.

We can supply a range of Humidity Indicator plugs that meet MS10813-1, DEF STAN 66-14, DEF STAN

All our Humidity Indicator Plugs are appropriate for use with NEMA 1, 2, 3, 3R, 3S, 4, 5, 6, 12, 12K & 13 enclosures, as well as IP66/IP67.

Humidity Indicator Plugs can also be installed into flexible barriers, commonly used on metal foil laminate packaging applications with dried foods, coffee, hygroscopic powders, injection moulding plastic pellets, protective clothing, medical packaging and pharmaceuticals.

Also see our Cargo & Container Desiccants for more information regarding this type of storage and protection.

For applications that require RF Screening, it is possible to have the threads natural or you can use a Conductive Nut Assemblies on the back of most plugs.

Our standard range of Container Humidity Indicator Plugs are below; however, we offer a complete range of custom and specialised humidity indicator devices, just contact our technical team for further details and drawings.

Showing all 15 results

  • AD301 black anodised humidity indicator plug with four pie segments marked 20, 30, 40 and 50 percent RH

    AD301

    Indicator levels:
    20, 30, 40 & 50% RH
  • AD302 black anodised aluminium panel bush showing the central threaded opening and retaining back nut

    AD302 Panel Bush for AD301 & AD320 Humidity Indicators

    Code: AD302

  • AD320 black anodised humidity indicator plug with 20 and 40 percent RH discs at +15 to +25 degrees C and 60 percent RH disc at +5 to +15 degrees C

    AD320

    Indicator levels:
    20, 40 & 60% RH
  • TA284

    TA284

  • TA348

    TA348

    Indicator levels:
    10, 20, 30% RH, 20, 30, 40% RH, 20, 40, 60% RH, 30, 40, 50, 60% RH, 30, 40, 50% RH, 40% RH, 60% RH
    Mounting Hole Size:
    3/4-14 straight pipe threaded boss
    Maximum Internal Pressure:
    10 psi
  • TA350

    TA350

    Indicator levels:
    10, 20, 30% RH, 20, 30, 40, 50% RH, 20, 30, 40% RH, 20, 40, 60% RH, 30, 40, 50, 60% RH, 30, 40, 50% RH, 40, 50, 60% RH, 40% RH
    Mounting Hole Size:
    1.05 in. (26 mm) diameter hole
    Maximum Internal Pressure:
    10 psi
  • TA354

    TA354

    Indicator levels:
    10, 20, 30% RH, 20, 30, 40, 50% RH, 20, 30, 40% RH, 20, 40, 60% RH, 30, 40, 50, 60% RH, 30, 40, 50% RH, 40, 50, 60% RH, 40% RH
    Mounting Hole Size:
    1.05 in. (26 mm) diameter hole
    Maximum Internal Pressure:
    10 psi
  • TA356

    TA356

    Indicator levels:
    10, 20, 30% RH, 20, 30, 40, 50% RH, 20, 30, 40% RH, 20, 40, 60% RH, 30, 40, 50, 60% RH, 30, 40, 50% RH, 40, 50, 60% RH, 40% RH
    Mounting Hole Size:
    1.05 in. (26 mm) diameter hole
    Maximum Internal Pressure:
    10 psi
  • TA359

    TA359

    Indicator levels:
    10, 20, 30% RH, 20, 30, 40, 50% RH, 20, 30, 40% RH, 20, 40, 60% RH, 30, 40, 50, 60% RH, 30, 40, 50% RH, 40, 50, 60% RH, 40% RH
    Mounting Hole Size:
    1.05 in. (27 mm) diameter hole
  • TA370

    TA370

    Indicator levels:
    20, 30, 40% RH, 30, 40, 50% RH
    Mounting Hole Size:
    0.515 in. (13.1 mm) diameter hole
    Maximum Internal Pressure:
    10 psi
  • TA380

    TA380

    Indicator levels:
    20-30-40%
    Mounting Hole Size:
    18.3mm
    Maximum Internal Pressure:
    10 psi
  • Illustration of a TA383-40 humidity indicator plug. Not a product photograph.

    TA383

    Mounting Hole Size:
    18-1.5 mm threaded boss
  • TA396

    TA396

    Indicator levels:
    10, 20, 30% RH, 20, 30, 40, 50% RH, 20, 30, 40% RH, 20, 40, 60% RH, 30, 40, 50, 60% RH, 30, 40, 50% RH, 30, 50, 70% RH, 40% RH, 60% RH
    Mounting Hole Size:
    1.45 in. (37 mm) diameter hole
    Maximum Internal Pressure:
    10 psi
  • TA398

    TA398

    Indicator levels:
    10, 20, 30% RH, 20, 30, 40, 50% RH, 20, 30, 40% RH, 20, 40, 60% RH, 30, 40, 50, 60% RH, 30, 40, 50% RH, 30, 50, 70% RH, 40% RH, 60% RH
    Mounting Hole Size:
    1.45 in. (37 mm) diameter hole
    Maximum Internal Pressure:
    10 psi
  • TL399 humidity control window

    TL399

    Indicator levels:
    3-point option: 30 / 40 / 50% RH, 5-point option: 40 / 50 / 60 / 70 / 80% RH, 7-point option: 20–80% RH
    Mounting Hole Size:
    4 inches diameter hole