toggle switch
toggle ,
on-off switch
on/off switch

There's only a single physical button on the entire 500i: the on-off switch.

While choice is limited to use of the on-off switch, viewers do state preferences.

The computer just looks at it as 400 on-off switches.

C1 A drug as an on-off switch for therapeutic genes.

Human genetics have developed an on-off switch in the brain.

An on-off switch stops the plastic lamps at any color.

Many parents who do not know where the on-off switch is seem content to leave children alone for hours in the computer room.

Until they remove the on-off switch, I'll have the last word or look.

It is not some kind of on-off switch by which men are constantly turned on and women off.

It's got an on-off switch here, where you're less likely to hit it.