Visiting America, listen out for useful devices (8)
I believe the answer is:
utensils
'useful devices' is the definition.
'visiting america listen out' is the wordplay.
'visiting' means one lot of letters goes inside another.
'america' becomes 'us' (abbreviation for the United States).
'out' is an anagram indicator (out can mean wrong or inaccurate).
'listen' with letters rearranged gives 'tensil'.
'us' going around 'tensil' is 'UTENSILS'.
'for' acts as a link.
(Other definitions for utensils that I've seen before include "Tools for household use" , "Domestic instruments or containers" , "Everyday domestic implements" , "Containers for kitchen use" , "Kitchen tools" .)