> For the complete documentation index, see [llms.txt](https://docs.twtg.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.twtg.io/docs/solidred-documentation/common-dashboards/device-health.md).

# Device health

To access the device health dashboard, select the desired device and click on the device health icon on the top of the detail tab. Alternatively,  click on the vertical ellipsis that appears when hovering over the device in the asset tree. In the displaying sub-menu, select the **Health** option. 

The device health dashboard comprises the following sections:

* **Last message:** when was the last message received by the device. 
* **Metadata**: device's name, devEUI, and integration name
* **Spreading factor**: the latest spreading factor the device currently operates in.
* **Uplink delivery rate**: percentage of successful received uplinks based on the TX counter.
* **Battery level graph**: battery level over time. 
* **Transmitter temperature**: temperature reported in the device's health messages.
* **Reboot reasons**: table with the reboot reasons reported by the device.
* **Message delivery statistics**: graph with the uplink delivery rate and the uplink message counter.
* **Spreading factor graph**: a visual representation of the spreading factor over time. 
* **Signal Strength**: graph with the average RSSI over time. 
* **Bist graph**: self-test Bist result over time. 

{% hint style="info" %}

### Additional information might be available based on the use case and the device type.

{% endhint %}

### User interaction

The user can interact with the graphs and tables in the device health overview as follows:

* In a graph, hovering over a point will display the value and timestamp where the mouse is pointing. 
* In a table or graph, the user can expand to full screen or export the data with the icons at the top right corner of the widget. 
* In a table, search functions and column display options are available in the icons in the top right corner. 


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