# Dew Point Temperature Calculation

> Symcon documentation · English · generated on 2026-09-26  
> Index: https://www.symcon.de/en/llms.txt

Source: https://www.symcon.de/en/service/documentation/module-reference/logic/dew-point-temperature-calculation/

Calculation of the dew point with the relative humidity and room temperature.
The calculation is based on the formulas from the page [Wetterochs](https://www.wetterochs.de/wetter/feuchte.html).

### function scope

* Calculation of dew point temperature
* Calculation of the temperature above which the risk of mold growth increases

### Software installation

* Install the 'DewPointCalculation' module via the Module Store.

### Set up the instances in IP-Symcon

 Under 'Add Instance' the 'DewPointCalculation' module can be found using the quick filter.
	- More information about adding instances in the [Instances documentation](https://www.symcon.de/service/dokumentation/konzepte/instanzen/#Instanz_hinzufügen)

__Configuration page__:

| name             | description                              |
| ---------------- | ---------------------------------------- |
| Room temperature | Temperature prevailing in the room in °C |
| Humidity         | Relative humidity, which prevails        |

### status variables

The status variables/categories are created automatically. Deleting individual ones can lead to malfunctions.

#### Status variables

| Name                         | Type    | Description                                                                                                                                                                       |
| ---------------------------- | ------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| dew point                    | float   | temperature, when falling below, excess water vapor will turn into water                                                                                                          |
| temperature for risk of mold | float   | temperature, when falling below this increases the risk of mold growth                                                                                                            |
| Alarm for mold risk          | boolean | Alarm, which is triggered when the temperature falls below the temperature for mold risk. It will be turned off when the room temperature is 1°C above the mold risk temperature. |