Crossword Genius

Range with flash fools by the sound of it (10)

Ross

I believe the answer is:

dandenongs

I'm a little stuck... Click here to teach me more about this clue!

'range' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'with flash fools by the sound of it' is the wordplay.
I cannot really understand how this works, but
'with' could be 'and' and 'and' is present in the answer.
'of' could be 'o' and 'o' is present in the answer.
'it' could be 'e' ('e' can mean 'electronic' which is similar to 'IT') and 'e' is found within the answer.
This explanation may well be incorrect...

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.
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