Kind of board to control electricity (6)

I believe the answer is:

switch

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'control electricity' is the definition.
'switch' can be an answer for 'control' (I've seen this before). I'm not sure about the 'electricity' bit.

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for switch that I've seen before include "Contact breaker; change" , "Change; hair-piece" , "Shift" , "Exchange; contactor" , "Change; false hair" .)

I've seen this clue in The Irish Independent.

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