# What You Need to Participate

To contribute your sensor node, you will need:

* **Purchase a sensor** (From  $985 USD)
* **High installation point** (roof, mast, attic)
* **Mains power** outlet nearby
* **High‑speed internet** (Ethernet or stable Wi‑Fi)
* **1 hour of your time** for setup

Once online, your sensor will begin feeding data to the 4DSKY network, and earning you points.


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.4dsky.com/information/what-you-need-to-participate.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.