> For the complete documentation index, see [llms.txt](https://docs.phoenixlidar.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.phoenixlidar.com/hardware-and-interfaces/camera/sony-mirrorless-cameras/a7r4-warning-messages.md).

# A7R4 Warning Messages

![](/files/-MYpJmssMTs0DHyPqfIN)

{% hint style="info" %}
When using a Sony A7R4 camera, there will be an info message (shown above) displayed on the camera screen when the system is powered on. This message appears as the camera is being powered via a 3rd party dummy battery and is no point of concern.

**The warning message will automatically disappear when the camera is being activated** (via Spatial Explorer or Push-Button recording on the Air NavBox). The camera is then fully operational.
{% endhint %}


---

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