> For the complete documentation index, see [llms.txt](https://docs.skysens.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.skysens.io/sources/network-management-lorawan/device.md).

# Device

#### Device List

<figure><img src="/files/TDAzWu25phm98kfTa75e" alt=""><figcaption></figcaption></figure>

* Device ID: A unique identifier for your device
* Battery: Last battery level of device
* SNR (Signal-to-Noise Ratio): SNR quantifies the clarity of a signal by comparing its strength to the background noise, revealing its quality
* RSSI (Received Signal Strength Indicator): RSSI measures the raw power of a received radio signal, indicating its strength
* Last RX: Last time of a package received from device
* Status: Indicates devices status

#### Send Downlink

You can send a downlink a device or  track your downlink history for a device. The downlink history provides a record of sent downlink messages, showing the message content, port, status, date, and any received responses.

<figure><img src="/files/WAx63ZiXMpVbSeDPBVlL" alt=""><figcaption></figcaption></figure>

* Port: Data is directed to the device via the LNS through this designated Port. Such as: "11" (Integer)
* Downlink: Your downlink message. Such as: "020000000C" (Hexadecimal)