He hesitated before pressing the big red switch that would shut down the factory.

The technician flipped the big red switches when the alarm sounded, restoring power to the lab.

The two-way switch only controlled the hallway light from a single spot, so we replaced it with a switch that allows control from two locations.

When renovating the hallway lighting, make sure the electrician correctly installs the four-way switch to control the fixtures from three locations.

To allow control of the landing lights from both upstairs and downstairs, the electrician installed a new two-way switch.