> For the complete documentation index, see [llms.txt](https://emotiv.gitbook.io/extender-manual/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://emotiv.gitbook.io/extender-manual/introduction/safety_precautions.md).

# Safety Precautions

* *Extender is a consumer product, it is not intended to use be used for in-patient health care or in hazardous environments.*
* *Extender is powered by a Lithium-Polymer battery that is rated for operation in <45C environments. It is not user replaceable, please contact support if you suspect you have a faulty battery.*
* *WARNING: Do not open the enclosure. Doing so will void the warranty and can damage the headset.*
* *Extender features a 2.5kV isolation barrier. Safety precautions have been taken to ensure this isolation barrier but any modification to the case will mitigate the safety.*


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