Sharp UX-51 Operation Manual page 3

Never install telephone wiring during a lightning storm.
Never install telephone jacks in wet locations unless the jack is specifically
designed for wet locations.
Never touch uninsulated telephone wires or terminals unless the telephone line
has been disconnected at the network interface.
Use caution when installing or modifying telephone lines.
Avoid using a telephone (other than a cordless type) during an electrical storm.
There may be a remote risk of electric shock from lightning.
Do not use a telephone to report a gas leak in the vicinity of the leak.
The socket-outlet must be installed near the equipment and must be easily
accessible.
Important:
This facsimile machine is only designed for use in the country where
purchased.