You can turn off or restart the printer from a computer using Web Config even when the computer is located remotely away from the printer.
Enter the printer's IP address into a browser to access Web Config.
Enter the printer's IP address from a computer that is connected to the same network as the printer.
You can check the IP address of the printer from the following menu.
Settings > General Settings > Network Settings > (Standard) > Network Status > Wired LAN/Wi-Fi Status
Enter the administrator password to log in as an administrator.
Select in the following order.
Device Management tab > Power
Select Power Off or Reboot
Click Execute.