Crossword Genius

Dimmer daughter heading for trouble in Suffolk town (3,6)

Ross

I believe the answer is:

dip switch

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

'dimmer' is the definition.
Both the definition and answer are singular nouns.
Maybe you can see an association between them that I can't see?

'daughter heading for trouble in suffolk town' is the wordplay.
'daughter' becomes 'd' (genealogical abbreviation).
'heading for' says to take the initial letters.
'in' indicates putting letters inside.
'suffolk town' becomes 'ipswich' (I've seen this before).
The initial letter of 'trouble' is 't'.
't' placed into 'ipswich' is 'ipswitch'.
'd'+'ipswitch'='DIP-SWITCH'

Can you help me to learn more?

(Other definitions for dip switch that I've seen before include "Uses ducking-stool, perhaps" , "way to reduce glaring" , "Light control" , "with which one lowers beam" , "Electrical device" .)

I've seen this clue in The Times.
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