From Longman Dictionary of Contemporary Englishtoggle switchˈtoggle switch noun [countable] technicalTEE a small part on a machine that is used to turn electricity on and off by moving it up or down
Examples from the Corpus
toggle switch• The expected toggle switch controls the pickup selections, but in a rather cunning fashion.• Installing 1E5.x's Web Accessories pack will lob an image toggle switch on your toolbar.• The toggle switch is two-position, and flicking it on takes the sound straight to a pre-determined setting.• The toggle switch selects either pickup or both, in time honoured fashion. 