Hitachi BTN1 Owner's Manual page 3

The lightning flash with arrowhead symbol, within an equilateral
triangle is intended to alert the user to the presence of uninsulated
dangerous voltage within the product's enclosure that may be of
sufficient magnitude to constitute a risk of electric shock.
The exclamation point within an equilateral triangle is intended
to alert the user to the presence of important operating and
maintenance (servicing) instructions in the literature accompanying
the appliance.
WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE
THIS APPLIANCE TO RAIN OR MOISTURE. TO PREVENT THE
SPREAD OF FIRE, KEEP CANDLES OR OPEN FLAMES AWAY
FROM THIS PRODUCT AT ALL TIMES.
CAUTION : TO PREVENT ELECTRIC SHOCK, DO NOT USE THE AC PLUG
WITH AN EXTENSION CORD, RECEPTACLE OR OTHER
OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED TO
PREVENT BLADE EXPOSURE.
CAUTION: TO REDUCE THE RISK OF
ELECTRIC SHOCK, DO NOT REMOVE
COVER (OR BACK). NO USER SERVICE-
ABLE PARTS INSIDE. REFER SERVICING
TO QUALIFIED SERVICE PERSONNEL.
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