Washing cycle showing movable energy controls (5)

I believe the answer is:

reins

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'controls' is the definition.
(take the reins)

I don't understand how the rest of the clue works.

(Other definitions for reins that I've seen before include "They're used to control" , "Harnesses" , "Rider's straps" , "Means of control for a horse" , "Straps for controlling a horse" .)

I've seen this clue in The Times.

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