# Device information

The **Device information** section provides an overview and detailed information about NB-IoT sensors and Efento Gateways. This section is accessible only to users with **Manager** or **Administrator** permissions. To open Device Management, click the **gear icon** in the menu bar and select **Device information**. 

<figure><img src="/files/Qp62gvhOq7VxrkggvhDg" alt=""><figcaption></figcaption></figure>

The content of the **Device information** section adapts to the devices present in your organization. If your organization has **Efento Gateways**, a **Gateways** tab will be displayed. If it includes **NB-IoT sensors**, the **NB-IoT Sensors** section will be shown.

## NB-IoT sensors

![](/files/fd539e4dfb785d38cf0f358efd1dd82e2f2540bf)

Information located in the NB-IoT tab:

* **Firmware** - device firmware version,
* **Cell ID (Hex) /  TAC / PCI** - parameters allowing to determine the base station providing NB-IoT communication,
* **Band** - used by the device to send the data via the NB-IoT network,
* **NB-IoT signal quality** - the values of the following parameters are highlighted in different colors depending on the range they fall within (<mark style="color:green;">**green - very good**</mark>**,&#x20;**<mark style="color:yellow;">**yellow - medium**</mark>**, red - poor**)
  * RSRP - <mark style="color:green;">**> -102**</mark>**&#x20;|&#x20;**<mark style="color:yellow;">**from -102 to -110**</mark>**&#x20;|&#x20;**<mark style="color:red;">**< -110**</mark>
  * RSRQ - <mark style="color:green;">**> -9**</mark>**&#x20;|&#x20;**<mark style="color:yellow;">**from -9 to -11**</mark>**&#x20;|&#x20;**<mark style="color:red;">**< -11**</mark>
  * RSSI - <mark style="color:green;">**> -75**</mark>**&#x20;|&#x20;**<mark style="color:yellow;">**from -75 to -84**</mark>**&#x20;|&#x20;**<mark style="color:red;">**< -84**</mark>
  * SINR - <mark style="color:green;">**> 10**</mark>**&#x20;|&#x20;**<mark style="color:yellow;">**from 10 to 8**</mark>**&#x20;|&#x20;**<mark style="color:red;">**< 8**</mark>
  * ECL - <mark style="color:green;">**0**</mark>**&#x20;|&#x20;**<mark style="color:yellow;">**1**</mark>**&#x20;|&#x20;**<mark style="color:red;">**2**</mark>
* **TX power** - current transmitting power of the NB-IoT module,
* **Battery voltage** - the last measured voltage of the sensors’ battery (the battery qualifies for replacement when its voltage drops below 2.7V),
* **Received at** - Timestamp of the received device information,
* **History** - allows you to view the above-mentioned historical data. The window view is shown in the screenshot below.

![](/files/c956bac8dcf908c02e8b657e3fb938c6f7900859)

## Gateways

![](/files/03b077e858242d38637ee06bc9e4ba7f3c40da7b)

The "Gateways" tab provides the following details:

* **MAC** - Gateway name and MAC address
* **Location** - Assigned location. The locstion is assigned manually by the user. Click the **pencil** button in the **Actions** column to modify it
* **Status** - Status of the gateway -"OK" or "LOST"
* **Power Supply** – Displays the current power source of the gateway, indicating whether it is running on the standard power supply (USB) or the backup battery. This information is shown only for LTE gateways.
* **Model** - Model type
* **Software version**
* **Received at** - Date and time of the last received device information
* **Sensors in range** - Number of in-range sensors detected
* **Actions** - Edit button - used to change the assigned location


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