> For the complete documentation index, see [llms.txt](https://docs.eseye.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.eseye.com/hera604/reference/warranty.md).

# Warranty

Protect the router and maintain safe warranty-covered operation.

## Warranty

Use Eseye-approved mains adapters only.

Do not open the enclosure. It contains no user-serviceable parts.

Follow every installation instruction. Incorrect installation can cause damage or injury.

{% hint style="warning" %}
Power off the router before inserting or removing an external SIM.
{% endhint %}

Keep the router in its supported environmental range. Protect it from liquids, excessive heat, and contaminants.


---

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