Are your ATM’s at Risk?


Let’s use a couple of independent websites to help us determine whether or not your ATMs might be at risk.


WeatherBug  is one of many weather websites that can provide us with weather information. Once you have entered your city or service area, clicking on the tab that says “HOURLY” will display all the information that you need. Scroll through the hours in a day and watch how the Humidity goes down as the Temperature goes up. On most days the humidity will be the highest in the early morning hours, just before the sun comes up, while it will be the lowest when the temperature is near it’s high point, during the mid to late afternoon.


The second website is Dew Point Calculator. This website was created by an organization called the Image Permanence Institute. It is designed to calculate and visually present the relationship between temperature, relative humidity and dew point and then display how these data points affect things like priceless artwork and documents. The site clearly displays the risk based on four types of material decay: natural aging or chemical decay, the risk of mechanical damage, the potential for mold growth, and the risk of metal corrosion. While the contents of our ATMs may not be as intrinsically valuable as the Mona Lisa or an original Constitution of the United States, the risks to our machines and currency fall into exactly the same categories.

The photo below is an example of what can happen inside an ATM when it is left unprotected in a high humidity environment. The Guardian Rod ensures this can’t happen.

Use the following test to see if your ATM’s are vulnerable to the weather in your area.

Step 1

Go to  and pick your city.  Click the “HOURLY” tab and note the temperature and dew point.

Step 2

Go to and click on the circle to solve for %RH. Input the temperature and dew point from WeatherBug to see the risk factors on ATM equipment and Vault Cash.

If any of the boxes on the right are red and say “RISK” you need help with changing the conditions. The Guardian Rod will protect your ATM from these types of decay and more!!

To see exactly how the Guardian Rod will help you, let’s try a bit of experimenting with the sliders on the dpcalc website. Set the temperature to 70° and the dew point to 65°. This should yield a RH level of 83%. Now move the temperature slider up to 80°. What happens to the relative humidity? It drops 25%! This is exactly how the Guardian Rod works. By gently warming the air inside the ATM, the relative humidity can be drastically lowered.





Dew point and atmospheric pressure are also important factors in the equation. Meteorologists consider the dew point to be the most accurate way of determining the true moisture content of the air, especially when it comes to how comfortable we will feel. Lowering the dew point or increasing atmospheric pressure will both  lower humidity. Unfortunately, lowering dew point involves the removal of moisture from the air which we have already discovered is impractical for several reasons.  Atmospheric pressure is even more complex to control since it requires a sealed environment before you can even attempt it.



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