To use this Digi 6310 - DX LTE cellular extender, first connect it to the correct power supply. Then, attach the antenna properly. Make sure to place it in an area with good signal reception. When using, avoid exposing it to extreme temperatures or humidity. For maintenance, keep it clean and dust - free. Check the connections regularly to ensure everything is working well. If you encounter any issues, consult the user manual or contact customer support.