# Device simulator

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Attention: To be able to use the device simulator, the [-> Device Simulator App](/collection/english-v14/apps/apps/device-simulator.md) must be installed.
{% endhint %}

The **Device Simulator** in *Eliona* allows data streams to be simulated in order to test dashboards, rules, and other functions before real devices are connected. It is ideal for validating configurations, prototyping new features, and analyzing different scenarios. It also supports training and troubleshooting by replicating realistic operating states – all without physical hardware.

<figure><img src="/files/ee48036fbbe77c36226d6747702dc7ea711ae8de" alt=""><figcaption></figcaption></figure>

## Device Simulator **Configure**

1. **Navigate to the desired attribute of an asset:**\
   Open an asset and select an attribute from the list of **attribute values** . To do this, click the attribute **\[A]**.
2. **Enable simulator:**\
   Turn on the device simulator with the switch **Enable \[B]** it.
3. **Select simulation type:**\
   Select the desired type of simulation **\[C]**:

   ▷ **Sine wave:** Smooth, cyclical data.

   ▷ **Random:** Unpredictable values.

   ▷ **Sawtooth wave:** Linear rise followed by abrupt fall.\
   You can find these options under **Configuration** .
4. **Integer:** Indicates whether the generated value should be an integer or a float **\[D]**.
5. **Define parameters:**\
   Set the parameters of the simulation:

   ▷ **Minimum value:** The lowest generated value **\[E]**.

   ▷ **Maximum value:** The highest generated value **\[F]**.

   ▷ **Interval (seconds):** Interval in seconds for data generation. (Sampling rate) (How often should new data be generated?) **\[G]**.

   ▷ **Frequency (Hz):** Frequency in Hz for wave functions. (How often should the function reach the original value per second?) (typically less than 1) (Must not be higher than 1/(2\*interval\_seconds) to avoid aliasing/Nyquist frequency) **\[H]**.
6. **Save settings:**\
   Click on **Save**, to apply the configuration **\[I]**.\
   ▷ The simulation is activated with the selected parameters.

{% hint style="info" %}
Simulated attributes are marked with a <img src="/files/8cec621583e09f1e3c54205dcaa2ff37edcd4fca" alt="" data-size="line"> .
{% endhint %}

## **Additional management options**

For advanced configurations and API-based generators, the **Device Simulator App** can be used.\
[-> Device Simulator App documentation](/collection/english-v14/apps/apps/device-simulator.md)


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