Sharp UX-A1000 Operation Manual page 6

Never install telephone jacks in wet locations unless the jack is specifically designed
for wet locations.
Never touch bare 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 power outlet must be installed near the equipment and must be easily
accessible.
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