Zodiac Free-To-Air DZR-1700FTA PLUS Manual De Empleo página 26

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 products enclosure that may be of
sufficient magnitude to consititute a risk of electric shock to a person.
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 product.
"TO REDUCE THE RISK OF ELECTROIC SHOCK, DO NOT EXPOSE THIS
EQUIPMENT TO RAIN OR MOISTURE"
CAUTION
3