====== Custom Device Types ======
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Custom decoders for unsupported Device payloads decoding.

{{ :advancedconfiguration:custom-device-type.png?nolink&1200|}}
  


The Custom Device Type allows writing a JavaScript code in order to decode payloads related to one device.  

Once your code is written, there are 3 ways to test it:

  * Write a payload in the payload area on the right section of the screen. Then press the "**Test**" button. The result is a JSON document that will appear in the result box below.
  * If your device already sends payloads to the IOT Platform, select this device, a payload, then press the "**Test**" button. The result is a JSON document that will appear in the result box below.
  * You may also send a payload, as it would be received from your device. In order to do this:
    * Make sure that your new Custom decoder (Custom Device Type) is active
    * Set this Device Type for your device (in the [[..advancedconfiguration:devices|Devices module]]).
    * Then, from this **Custom Device Types** module, click on the **Add** button at the top/righ, and select "Send test payload"