i have contacted my supplier.
(h) Class A digital device. A digital device that is marketed for use in a commercial, industrial or business environment, exclusive of a device which is marketed for use by the general public or is intended to be used in the home.(i) Class B digital device. A digital device that is marketed for use in a residential environment notwithstanding use in commercial, business and industrial environments. Examples of such devices include, but are not limited to, personal computers, calculators, and similar electronic devices that are marketed for use by the general public.
the definition is based on industrial or residential use not on emissions.
Scanners and radar detectors are two examples of part 15-B unitentional emitters that do require certification and thus an FCC ID.