> For the complete documentation index, see [llms.txt](https://docs.xbstation.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.xbstation.com/xblink-duo/user-manual.md).

# User Manual

This section contains information about XBLink Duo

<figure><img src="https://752643261-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M1Ot9F_Ob2Aboz1SKNK%2Fuploads%2FNvm6Q7KDdmnNlKnffU3X%2Fdualcell_v4_150926.192.png?alt=media&amp;token=0c280136-2f6f-4a5f-8f2b-9b7436fe3ef5" alt=""><figcaption></figcaption></figure>

**XBLink Duo** is a Plug and Play hardware for BVLOS Flight featuring Dual Cellular modules (4G/LTE) with optional Satellite backup.

To discover XBLink Duo, we need to understand the main components:

* **XBLink Hardware:** A companion computer featuring Dual Cellular networks (2 SIM slots) and optional Satellite backup. It integrates networking equipment, drone standard connectors, and a power module into one compact design.
* **XBFirm process:** A set of software based on Linux making a platform for live streaming and controlling telemetry data. It is also designed to easily integrate other functions, e.g. Gimbal/Payload control, computer vision, AI, UTM, ...
* **XBLinkApp (Wifi Hotspot):** Web interface to easily configure and communicate with XBLink Duo without touching and wiring. You can connect XBLinkApp via Wifi hotspot from your phone, tablet or PC.

### Highlight features

* Dual Cellular (4G/LTE) modules with 2 SIM slots for network redundancy
* Cell to Cell failover: If one cellular network loses its signal, the system utilizes the other to maintain communication between the UAV and Ground Station
* Optional Satellite backup with automatic failover logic from Cellular to Starlink network
* High bandwidth and low latency
* Reliable connection
* Build for various drone applications like mapping, drone delivery and more ([contact](https://xbstation.com/contact))
* Supports Sony SDK and Gremsy Gimbal SDK ([contact](https://xbstation.com/contact))
* GPS RTK/PPK ([contact](https://xbstation.com/contact))
* Supports integrated with Siyi or Herelink and IP camera
* Compatible with *Ardupilot*/*PX4*
* Multiple interfaces including Ethernet, IO, and USB ports
* Connecting to Cloud - Fleet manager drone ([contact](https://xbstation.com/platform))