# Decoder Function

### Overview

Decoder Functions in Qubitro allow you to **decode incoming payloads** before storing data. 

Depending on your device type and data format, you can choose from different decoder options to ensure data is structured correctly.

{% hint style="success" %}
Once a **decoder function** is created, it runs automatically for incoming data **without requiring manual activation**.
{% endhint %}

{% hint style="info" %}
If needed, the function can be **disabled from the functions list** under the device’s **Functions** tab without deleting it.
{% endhint %}

<figure><img src="https://3109056034-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FfQfo4zX1x0hfOimS9E2u%2Fuploads%2FduiFr2uL1j3XufSjdhu0%2Fimage.png?alt=media&#x26;token=8f83a993-7c84-4b1a-890c-5ea600e8ebac" alt=""><figcaption></figcaption></figure>

### Choosing the Right Decoder

Qubitro provides three types of decoders, each suited for different integration needs:

#### **LoRaWAN Device Template Decoder**

Use this option if your LoRaWAN device has a **predefined template** in Qubitro. It allows you to **automatically decode** incoming payloads without writing custom logic.

* [x] Works with **all LNS providers** (The Things Stack, ChirpStack, etc.).
* [x] Requires **no custom scripting**—simply select a template from the portal.
* [x] Ensures **consistent and accurate decoding** based on manufacturer specifications.

{% hint style="info" %}
If you use the LoRaWAN Device Template Decoder, device templates for dashboards will work automatically, enabling instant visualization of decoded data.
{% endhint %}

{% content-ref url="decoder-function/lorawan-device-template-decoder" %}
[lorawan-device-template-decoder](https://docs.qubitro.com/platform/functions/decoder-function/lorawan-device-template-decoder)
{% endcontent-ref %}

#### **LoRaWAN Custom Device Decoder**

Use this option if your LoRaWAN device **does not have a predefined template**. You can write **custom JavaScript** to decode payloads manually.

* [x] Works with **all LNS providers** (The Things Stack, ChirpStack, etc.).
* [x] Requires **custom JavaScript** to parse incoming payloads.
* [x] Ideal for **custom or new LoRaWAN devices** that are not yet available as templates.

{% content-ref url="decoder-function/lorawan-custom-decoder" %}
[lorawan-custom-decoder](https://docs.qubitro.com/platform/functions/decoder-function/lorawan-custom-decoder)
{% endcontent-ref %}

#### **HEX Payload Decoder**

Use this option if your device **sends data in hex-encoded format instead of JSON**. It converts **hex-encoded strings** into structured JSON.

* [x] Works with **non-LoRaWAN devices**, including [**MQTT**](https://docs.qubitro.com/data-sources/mqtt)**,** [**HTTP**](https://docs.qubitro.com/data-sources/http)**,** [**Onomondo**](https://docs.qubitro.com/data-sources/no-code-integrations/onomondo)**, and more**.
* [x] Converts **hex-encoded strings** into readable JSON.
* [x] Useful for devices that **cannot publish raw JSON directly**.

{% content-ref url="decoder-function/hex-payload-decoder" %}
[hex-payload-decoder](https://docs.qubitro.com/platform/functions/decoder-function/hex-payload-decoder)
{% endcontent-ref %}