Panasonic KX-T4300BA - Manual (Page 62)

For your future reference
Serial No. Date of purchase
(found on the bottom of the unit)
Name of dealer
Dealer’s address
WARNING:
TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS
PRODUCT TO RAIN OR ANY TYPE OF MOISTURE.
When a failure occurs which results in the internal parts becoming
accessible, disconnect AC adaptor immediately and return this unit to
service center.
If there is any trouble, disconnect the unit from the telephone line and
connect a known working phone. If the known working phone
operates properly, do not reconnect the unit to the telephone line until
the trouble has been repaired, if the known working phone does not
operate properly, consult with a telephone company.