Extech 445815 Humidity Alert II


Humidity display with DEW point display perfect for vehicle rustproofing applications

We recommend that anyone conducting vehicle underbody rustproofing treatments whether a private individual or professional should purchase a good quality humidity metre to ensure the chassis is completely dry after steam cleaning prior to application. Please be aware that drying times can be greatly affected by weather conditions and humidity within a
building. Due to these external factors we recommend investing in a good quality temperature and humidity
meter so you can monitor the conditions.

Product Specification:

  • Displays humidity, temperature and dew point
  • 460mm sensor cable allows measurement in awkward, humid spaces and is ideal for placing into vehicle cavities & crevices.
  • Ideal for vehicle rustproofing corrosion protection applications and manufacturing environments
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SKU: 445815 Categories: ,


The Extech 445815 Humidity Alert II is a handy device for measuring humidity and temperature in a range of surroundings including calibration laboratories, server rooms, or manufacturing environments where it is vital to maintain a consistent humidity level. In addition, the Humidity Alert II can be set to sound when conditions become favourable to mould and its probe with a 460mm cable is incredibly useful for measuring behind walls where humidity and mould can be real problems. These capabilities help employers meet government guidelines on humidity levels at work. Its audible and visual alarms sound whenever the chosen humidity parameters are exceeded and/or not reached and it has another useful feature in the form of a dew point indicator.

Recent maximum and minimum readings can be checked at the push of a button and product can be adapted to the user’s specific needs depending on the environment. Users can have confidence in the alarm as it meets US government traceability standards. The Humidity Alert II comes provided with all the necessary accessories to get started straight away including a built-in stand, a wall mount bracket, a sensor and 2 AAA batteries so it is ready to use immediately. Finally, the Alert is produced to Extech’s habitual high standards and comes with a 1 year warranty providing further peace of mind.

  • Audible and visual alarms when humidity exceeds or fails to reach set limits
  • Calibrateable
  • Adjustable according to user’s needs
  • Dew point indicator
  • Probe’s 460mm cable allows user to measure behind walls
  • Max/Min readings displayed at the push of a button
  • Measures humidity from 10% to 99%
  • Temperature measured from -10℃ to 60℃
  • Accurate to ±4%RH; ±1℃
  • Includes stand, sensor, wall mount bracket and batteries
  • 1 year warranty


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