1.   Computers, Fletcher maintains, always have their on-off switch on the back.

2.   A breaker, essentially the on-off switch regulating the power that goes through a transformer, was beginning to burn.

3.   A company spokesman said focus groups did not view the lack of an on-off switch as critical.

4.   A simple widget is an on-off switch connected to a light bulb.

5.   Each screen has an on-off switch, so that anyone who does not want to use it can turn it off.

6.   Finally, there is a third inserted gene that serves as the on-off switch for the whole system.

7.   For once, my gut reaction was not to reach for the off switch.

8.   He might indeed forever be a guy who turns it on and turns it off, with the off switch holding a substantial lead.

9.   Is it time to hit the off switch on our computers?

10.   Lin of Taiwan designed a flexible headband with a battery, an on-off switch, an electronic circuit and a tiny speaker.