rating plate
data plate

These figures are usually displayed on a rating plate attached to the appliance, e.g. 230 volts, 3 amperes.

Boats built in the U.S. have a Coast Guard Rating Plate which specifies the maximum recommended horsepower for the hull.

There is no symbol for a Class I product so if a rating plate has no symbol on it then it is usually Class I.

Switch mode power supplies may operate from DC but are not generally described as 'AC/DC' and rating plates do not include DC ratings.