The small humidity indicators are designed to be mounted on moisture-sensitive electronic, electro-optic equipment or any humidity-controlled enclosure. They come with a colour-changing indicator paper that turns pink when humidity increases and blue when it decreases, making it easy to detect changes in humidity levels.

The humidity indicators can also be fitted with a desiccant cartridge, a static desiccator filled with silica gel or molecular sieve desiccants that adsorbs moisture that may enter the equipment during usage. We recommend replacing the humidity indicator paper every 3-5 years for optimal performance.

  • Small and compact
  • Distinctive colour change indication​
  • Reversible and non-reversible option
  • Available in plastic or metal housings
  • Clear window to observe and monitor any change in humidity level


The M8 thread 10% R.H. Brass Indicator Plug has spanner flats for easy installation. The single-level brass humidity indicator is compact and non-sparking. It can be customised with different R.H. levels based on specific requirements.


The M8 thread 10% R.H. stainless steel humidity indicator plug features spanner flats for easy installation into equipment. This compact unit can be customised with different R.H. levels to meet specific requirements.


This M8 thread split-level brass Humidity Indicator is a non-sparking humidity indicator with spanner flats for easy fitting. Small and compact, this unit can be provided with R.F. screening when required.


A humidity indicator plug with a 30/50% R.H. level is constructed from durable polycarbonate material, making it an affordable option for humidity monitoring. This plug includes a black nut that can be used for different applications, such as mounting on barrier bags.


The ½” UNF thread 20, 30 & 40% R.H. indicator plug is designed for R.F. screening and made of black anodised aluminium material. This humidity indicator has a glass window and alochrome thread to ensure the continuity of R.F. screening. It also features a gasket, retainer, and hex black nut for easy installation. Install a container through a 0.515-inch (13.1 mm) diameter hole. This unit is available in single or multiple spot discs to meet different requirements.


The 1/2″ UNF thread brass humidity indicator plug is cost-effective for monitoring humidity levels. With R.H. levels of 20, 30, and 40%, this zinc-plated brass unit features a glass window to observe container contents easily. This eliminates the need to open packages for inspection, saving costs and improving productivity. Installation is easy with the included gasket, gasket retainer, and nut and can be done through a container’s 0.515-inch (13.1mm) diameter hole. The unit is available in single and multiple spot discs for added flexibility.


This split-level stainless steel humidity indicator has an M8 thread and is painted for durability. It has spanner flats for easy installation and can be customised with different R.H. levels.


This split-level humidity indicator has a 3/4″ U.N. thread and a 15/30% R.H. level. The unit can be easily installed using a square drive and is compact in size. It can also be customised with R.F. screening if needed.